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BER / DEAP / Draft Part L

  • 20-11-2007 11:38pm
    #1
    Closed Accounts Posts: 5,433 ✭✭✭


    I hope to gather thoughts on Draft Part L / BER / DEAP assessment method .

    I have not completed a BER course , but have attended a "Part A " introduction where we were "talked through" the DEAP software

    Sinnerboy gripe 1
    SEI will only make the software available to BER assessors . Designers, including self builders will not be issued it ( I asked SEI for it only this week and was refused ) . A less user friendly excell spreadsheet version of DEAP is freely available .

    Sinnerboy grip 2
    Draft part L proscribes detailed requirements for air tightness testing . The type of test , frequency of testing , target air tightness performance . NO requirement as to WHO does the testing . Air testing is the process whereby careful design and specification information will be .....well tested . The quality and integrity of the tester ought to regulated in a similar way as electricians who are RECI registered . No "bogey" certs

    sinnerboy gripe 3
    vicarious one this as I have not actually used the DEAP software yet but have listened to some who have . So ... second hand comments now ,

    Apparently the reference house front entrance door calculation is supposed to a 3sqm door with u value of 2.0 . The alogrithm of the software have reversed these values ( 2m2 door u value 3 )

    HRV's calculate as carbon neutral i.e. heat energy saved is negated by electricity used . Not fair to good quality HRV units .

    DEAP software does not include calculation of embodied energy

    I am hoping other will post observations / gremilins with the DEAP software


«1

Comments

  • Registered Users, Registered Users 2 Posts: 21,676 ✭✭✭✭smashey


    Have these issues been pointed out to the DEAP programmers?


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    Don't think so - as I say I am reporting them here 2nd hand . I heard about them only this evening in open forum at this gathering

    http://www.easca.ie/


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sinnerboy wrote: »
    Apparently the reference house front entrance door calculation is supposed to a 3sqm door with u value of 2.0 . The alogrithm of the software have reversed these values ( 2m2 door u value 3 )
    This is a minor issue really, and it won't effect the calculation of heat lost through the door, a 2m2 door @ 3 W/m2K loses 6 joules per second per delta degrees, a 3m2 door @ 2 W/m2K also losses 6 joules at the same rate
    HRV's calculate as carbon neutral i.e. heat energy saved is negated by electricity used . Not fair to good quality HRV units
    I'm surprised at this, its not fair to good units, and bad units are at an advantage.
    DEAP software does not include calculation of embodied energy
    Well, to be fair there is no reason it should. Its an energy usage rating.
    For most buildings, embodied energy is a tiny amount of the carbon used, it is only an issue when the building is approaching very low levels of energy use.


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    Another point I recall now is that the factor for cold bridging is allowable to to set between 1.1 ( default ) and 0.08 if accredited details are implemented .

    This seems unfair to systems like ICF's and Poroton and external insulation systems which eliminante cold bridges i.e. should they not be allow a very low ( or zero ) factor ?


  • Closed Accounts Posts: 495 ✭✭ardara1


    sinnerboy wrote: »
    Another point I recall now is that the factor for cold bridging is allowable to to set between 1.1 ( default ) and 0.08 if accredited details are implemented .

    This seems unfair to systems like ICF's and Poroton and external insulation systems which eliminante cold bridges i.e. should they not be allow a very low ( or zero ) factor ?

    Hi Sinner - don't assume that such systems have better detailing - to use the 0.11 Y value you must follow the details set down in the HOmebond Right On site booklet 18 which as much use as an ashtray on a motor bike. To claim 0.08 Y value - you go to a book published by DEFRA - 'Robust details - Limiting thermal bridging and air leakage - robust construction details for dwellings and similar buildings - £27 - but is now out of date. They've been replaced by Accreddited Details for COnstruction available on the PLanning Portal webssite that have details for - Internal - External - timber & steel frame -


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  • Closed Accounts Posts: 495 ✭✭ardara1


    sinnerboy wrote: »
    Another point I recall now is that the factor for cold bridging is allowable to to set between 1.1 ( default ) and 0.08 if accredited details are implemented .

    This seems unfair to systems like ICF's and Poroton and external insulation systems which eliminante cold bridges i.e. should they not be allow a very low ( or zero ) factor ?

    Hi Sinner - don't assume that such systems have better detailing - to use the 0.11 Y value you must follow the details set down in the HOmebond Right On site booklet 18 which as much use as an ashtray on a motor bike. To claim 0.08 Y value - you go to a book published by DEFRA - 'Robust details - Limiting thermal bridging and air leakage - robust construction details for dwellings and similar buildings - £27 - but is now out of date. They've been replaced by Accreddited Details for COnstruction available on the PLanning Portal webssite that have details for - Internal - External - timber & steel frame - Partial & full fill cavity.

    It's to these details that our new draft Part L consultation document refers - and guess what - they're in the process of being updated in the UK - it's always good to know we're ahead of the game!


  • Registered Users, Registered Users 2 Posts: 12,822 ✭✭✭✭galwaytt


    well, here's another issue: the DEAP software is definately 'buggy'.

    I had a BER test done on a house, after having a UKAS accredited UK co do an airtightness test, and both SEI/DEAP users gave me..........completely different ratings.

    So, does this mean, like the driving test, we keep going until we get the answer we like, and then stick with that?

    Another gripe - it cost €xxx for the BER job. But it's extra for the actual cert, and neither of the SEI boys could print anything from the software (which would have helped with the disparity we were chasing). Shades of good 'ol Bill Gates there, I'd have thought, and look how much he got fined......:D

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  • Closed Accounts Posts: 495 ✭✭ardara1


    galwaytt wrote: »
    well, here's another issue: the DEAP software is definately 'buggy'.

    I had a BER test done on a house, after having a UKAS accredited UK co do an airtightness test, and both SEI/DEAP users gave me..........completely different ratings.

    So, does this mean, like the driving test, we keep going until we get the answer we like, and then stick with that?

    Another gripe - it cost €xxx for the BER job. But it's extra for the actual cert, and neither of the SEI boys could print anything from the software (which would have helped with the disparity we were chasing). Shades of good 'ol Bill Gates there, I'd have thought, and look how much he got fined......:D

    It's not the software galway - they're both using the same version - it's the input that varies.

    I haven't done the exam - but I believe the house type they assessors are examined on are VERY basic - and U-values are given to them - can any body confirm this?


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    [QUOTE
    It's to these details that our new draft Part L consultation document refers - and guess what - they're in the process of being updated in the UK - it's always good to know we're ahead of the game![/QUOTE]

    Hi A1

    Can you clarify - The accredited details were only published in July 07 - are they outdated already ? :confused:When are we likely to see them updated ?


  • Closed Accounts Posts: 495 ✭✭ardara1


    sinnerboy wrote: »
    [QUOTE
    It's to these details that our new draft Part L consultation document refers - and guess what - they're in the process of being updated in the UK - it's always good to know we're ahead of the game!

    Hi A1

    Can you clarify - The accredited details were only published in July 07 - are they outdated already ? :confused:When are we likely to see them updated ?[/QUOTE]

    The accredited details were available way before july, they were for use in the Eng & Wales 2005 revision of Part L (This was similar to our 2006 Part L)

    Our draft Part L aims at a 40% improvement on those standards - the UKs target for 2010 - part of which involved redrawing all the OLD details - should have a draft copy of them this month - aim is to improve the Y value from the 0.08 to 0.04.


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  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    ardara1 wrote: »

    Our draft Part L aims at a 40% improvement on those standards - the UKs target for 2010 - part of which involved redrawing all the OLD details - should have a draft copy of them this month - aim is to improve the Y value from the 0.08 to 0.04.

    Ardara1 - would you be kind enough to let us know when the draft details are published ?


  • Registered Users, Registered Users 2 Posts: 1,152 ✭✭✭holdfast


    There any of number of problems with this software. there are too many varibles. Such as the air infiltration. the Rating must inlcude an air tightness test like the UK.

    another bug bears is the standard of personnel teaching and people receiving the training. it looks as some private companies dont care who does the course. one thing for sure the SEI dont, i have e-mailed them about this and no reply. The SEI just see this as money making venture.


  • Registered Users, Registered Users 2 Posts: 1,570 ✭✭✭Builderfromhell


    Slightly off topic.

    Does anyone know what a BER assesment on a new house costs?


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    Bang on topic . about €250-300


  • Registered Users, Registered Users 2 Posts: 1,570 ✭✭✭Builderfromhell


    Sounds like a nice little earner and another expense for the hard pressed home owner of the future.


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    BFH you got it in one

    I have been rebuffed elsehwere for suggesting that the cert may expect to be used by some to indicate fuel cost prediction ( hold your horses mods- I know it's not intended to do this - fuel cost will depend on size of house and occupier behaviour , severity of winter season etc etc) .

    My point is that Joe Public will be pretty pissed off to pay for something that he probably believes he has a reasoable feel for anyway . 1950's semi d- bad 1990's semi not so bad . He will resent having to get the lable and ( mark my words ) many will feel pee'd off that it is not "even" a fuel cost predictor . He won't accept the speil that is "informing" him . I don't think so anyway .

    ( I have posted this on another forum before - sorry if you have heard me say this already )

    Specifically re BER I see trouble ahead on numerous counts . ( 2009 onwards mostly )

    Scenario 1a
    Landlord sends in 3 BER assessors , pays for the "correct" result and two fingers to the guys who got it "wrong" .

    Scenrio 1b
    Really scummy landlords will make tenants pay for the cert ( do you really think this wont happen - come on )

    Scenario 2
    Big business sues assessor for screwing up property deal for getting assessment "wrong"

    Scenario 3
    Developer cherry picks "pet" assessors who get it "right" . Developer cherry picks sample units for testing , where extra attention required for air tightness has been carried out . Developer will have "pet " air testers too ( No regulation of testers is included in Draft Part L . Nothing to stop Joe the barman/mini cab driver becoming a tester )

    Scenario 4 - the big one - as above
    General public (mis) apprehension that BER cert won't actually predict actual fuel spend - reaction - "so what am I paying for then" - Call Joe Duffy now . Fat Kenny "exposes" scam on late late Show . Then again with mis diagnosed cancer patients , big pay rises for the big lads while the ecomony dips for the rest of us and a "wag the dog" style chrisis is manufactued ( prov licenes ) , I guess people will just do the Irish thing - accept it

    Ok rant over :o


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sinnerboy wrote: »

    I have been rebuffed elsehwere for suggesting that the cert may expect to be used by some to indicate fuel cost prediction ( hold your horses mods- I know it's not intended to do this - fuel cost will depend on size of house and occupier behaviour , severity of winter season etc etc) .
    In general it will give a decent reflection. Not exact but a close enough average, the building size shouldn't matter as the KWh figure is per m2.
    My point is that Joe Public will be pretty pissed off to pay for something that he probably believes he has a reasoable feel for anyway . 1950's semi d- bad 1990's semi not so bad .
    On average, the newer the house true, but not all houses are made equal. Two similar houses from the same period may have completely different ratings, the cert makes this clear to Joe and family.

    Scenario 1a
    Landlord sends in 3 BER assessors , pays for the "correct" result and two fingers to the guys who got it "wrong" .
    Thats a problem with assesors standards, there is no reason why all assessors should be expected to get the same result for the same buildings.

    Scenrio 1b
    Really scummy landlords will make tenants pay for the cert ( do you really think this wont happen - come on )
    I doubt it, its up to the landlord, if the tenent doesn't pay for it its the lardlord that will suffer
    Scenario 2
    Big business sues assessor for screwing up property deal for getting assessment "wrong"
    Hardly a fault, if people consider this a little earner on the side, they would be foolish to attempt large buildings where they are not up to speed, also to get involve with large scale projects with PI is also crazy.

    Scenario 3
    Developer cherry picks "pet" assessors who get it "right" . Developer cherry picks sample units for testing , where extra attention required for air tightness has been carried out . Developer will have "pet " air testers too ( No regulation of testers is included in Draft Part L . Nothing to stop Joe the barman/mini cab driver becoming a tester )
    It shouldn't matter who the tester is, as long as they are up to scratch. As for cherry picking units, will new units not be done off the plans?

    Scenario 4 - the big one - as above
    General public (mis) apprehension that BER cert won't actually predict actual fuel spend - reaction - "so what am I paying for then" - Call Joe Duffy now . Fat Kenny "exposes" scam on late late Show . Then again with mis diagnosed cancer patients , big pay rises for the big lads while the ecomony dips for the rest of us and a "wag the dog" style chrisis is manufactued ( prov licenes ) , I guess people will just do the Irish thing - accept it
    Easily explained they are paying to compare their house to others on a scale of energy usage.



    Of course, like everything else in the energy sector, it will be exploited with marketing bull****e and promises based on false ideas.


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    Mellor I would be inclined to agree with you if .....
    Mellor wrote: »
    In general it will give a decent reflection. Not exact but a close enough average, the building size shouldn't matter as the KWh figure is per m2.

    The building size was not known to the assessor and he/she could not then multiply the KWH/M2/yr rate by M2 by annual estimated heat demand hours ( or if the DEAP software calculated this ) and the label then stated an estimated annual energy load .

    Then maybe the 250 m 2 "B3" rated , one off house 25 miles from occupants work , ten miles from his kids school , would no longer appear to be "better" than a 140m2 "C2" rated inner suburban semi D . ( I beleive location of the property should be factored in too BTW )
    Mellor wrote: »
    On average, the newer the house true, but not all houses are made equal. Two similar houses from the same period may have completely different ratings, the cert makes this clear to Joe and family.

    How will the asssor know or be in a position to establish ( bearing in mind for a Fee of €250-350 minus VAT minus €25 lable charge minus travel time minus income tax ) the standard to which a 1950's refurbed house has been drylined ( thickness / spec ) double glazed ( low e / argon filled / frame thermal break / selas intact to vents etc ) , if a timber floor is insulated etc . He relies on occupier information ? ( they may exagarate you know ) .

    Approximation - assumption- default values will have to be applied . Commercial reality .

    Mellor wrote: »
    Thats a problem with assesors standards, there is no reason why all assessors should be expected to get the same result for the same buildings.

    Prediction 1 .
    Assesor standards will vary . I have heard "on the grapevine" that not all assesors are au fait with construction methods . Included in this grapevine are some touting to teach an assesor course . " Our course is not as long because that other course takes in trainees who have to be taught what a u value is " Direct qoute from Plan Expo stand to me .

    Prediction 2
    Certain developers will sniff out quickly Asssesors who are "biddable" .
    Mellor wrote: »
    I doubt it, its up to the landlord, if the tenent doesn't pay for it its the lardlord that will suffer

    I've known some landlords . The costs will be passed on .
    Mellor wrote: »
    Hardly a fault, if people consider this a little earner on the side, they would be foolish to attempt large buildings where they are not up to speed, also to get involve with large scale projects with PI is also crazy.

    ...... just wait for it to happen.........
    Mellor wrote: »
    It shouldn't matter who the tester is, as long as they are up to scratch. As for cherry picking units, will new units not be done off the plans?

    Who's to know if the tester is up to scratch ? How are you to know ? There is no provsion to register testers . Draft TGD L ( seperate but related to BER ) requires site testing . So ......BER cert issued off drawings / specification to comply with standards is followed by construction which does not follow drawings / spec except for cherry picked units , for testing . BER cert then means ..... what ? How could I possibly suggest this might happen ?

    Mellor wrote: »
    Easily explained they are paying to compare their house to others on a scale of energy usage.

    I am sure that will please them . It won't take long for people to twig the shortcomings - Can't you not see now a "primetime" expose - I can . I can see Mark Littles earnest expresion right now .......:rolleyes:


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    Some good points there sinnerboy
    sinnerboy wrote: »

    The building size was not known to the assessor and he/she could not then multiply the KWH/M2/yr rate by M2 by annual estimated heat demand hours ( or if the DEAP software calculated this ) and the label then stated an estimated annual energy load .
    Is it possible to calculate the a KWh/m2y value without the building area and volume. Surely not as alot of the energy usuage depends on volume vrs exposed area
    Then maybe the 250 m 2 "B3" rated , one off house 25 miles from occupants work , ten miles from his kids school , would no longer appear to be "better" than a 140m2 "C2" rated inner suburban semi D . ( I beleive location of the property should be factored in too BTW )
    I certainly believe that location, size of house and lifestyle play a huge part in energy use of a household, BUT I don't realy think that BER/DEAP is a good place to factor this in, as it isn't really part of what DEAP assess and people who do make an effort would be at a loss as you these things are often unprovable.


    How will the asssor know or be in a position to establish ( bearing in mind for a Fee of €250-350 minus VAT minus €25 lable charge minus travel time minus income tax ) the standard to which a 1950's refurbed house has been drylined ( thickness / spec ) double glazed ( low e / argon filled / frame thermal break / selas intact to vents etc ) , if a timber floor is insulated etc . He relies on occupier information ? ( they may exagarate you know ) .

    Approximation - assumption- default values will have to be applied . Commercial reality .

    Well any assessor worth his "Fee of €250-350 minus VAT minus €25 lable charge minus travel time minus income tax" should be able establish the build up in most elements. Walls and roof are simply to establish, floor is an issue of course, and windows will have to be default based on type, glazing build yup etc. This should be accurate enough.

    Prediction 1 .
    Assesor standards will vary . I have heard "on the grapevine" that not all assesors are au fait with construction methods . Included in this grapevine are some touting to teach an assesor course . " Our course is not as long because that other course takes in trainees who have to be taught what a u value is " Direct qoute from Plan Expo stand to me .
    Unfortunatly, this is most likely true. Construction knowledge will our course be important.
    ...... just wait for it to happen.........
    If it does happen, then the person it happens to deserves it for getting into a situation where they were working were they lacked the knowledge.
    Of course a cert isn't set in stone, if a mistake is made, it is possible to do the cert again, at the expense of the assessor of course.


    I am sure that will please them . It won't take long for people to twig the shortcomings - Can't you not see now a "primetime" expose - I can . I can see Mark Littles earnest expresion right now .......:rolleyes:
    Possible, but in fairness I don't really rate most of those exposé type things. Mis-knowledge as always mis-applied is probably a good way to discribe them


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    My apprehension , Mellor is that for many various reasons that the lables won't do what they are intended to - inform people - because the labeling process will become discredited . I wish this weren't so but I think people will quickly loose faith in them actually . On this score , I do actually hope to be proven wrong


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  • Registered Users, Registered Users 2 Posts: 1,046 ✭✭✭archtech


    Then maybe the 250 m 2 "B3" rated , one off house 25 miles from occupants work , ten miles from his kids school , would no longer appear to be "better" than a 140m2 "C2" rated inner suburban semi D . ( I beleive location of the property should be factored in too BTW )
    I certainly believe that location, size of house and lifestyle play a huge part in energy use of a household, BUT I don't realy think that BER/DEAP is a good place to factor this in, as it isn't really part of what DEAP assess and people who do make an effort would be at a loss as you these things are often unprovable.

    Should we be going down the road of a BREAM type rating like in the UK?


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    archtech wrote: »
    Should we be going down the road of a BREAM type rating like in the UK?
    What format is that rating given in?
    I have never heard of BREAM, do you mean SBEM?


  • Registered Users, Registered Users 2 Posts: 373 ✭✭fatherbuzcagney


    hi, i completed the ber course about eight weeks ago. As far as i can see its going to be a total farce. Most of the flaws and problems have been mentioned in thread already. A couple of points that id like to mention, firstly , what use is a ber cert calculated of drawings and specifications, it would be a miricale if the exact CDER and ber rating matched when the building is constructed. There is so much scope for error with everything covered up with assumptions and default values and we must have faith that our good honourable builders will construct dwellings/projects exactly by the book. So ber certs IMO of plans/drawings are not worth the (25euro)sheet of paper they are printed on. Its my opinion that every dwelling/building should have an air pressureisation test done before hand over and meet a minimum insulation standard in floors/walls and attic and all the other ber bullsh1te scrapped. If a dwelling is reasonably air tight and well insulated, then it will have a reasonable energy requirment. Secondly, with all the problems, faults and loopholes there is no possible way that this can be enforced or regulated. {who passed the 30,000/40,000 that recieved planning and built since jan 07}.Finally, with 12 people completing course the same week as myself and a good few repeating the exams,the money collected was over 23,000 euro. Take away the hotel room expence and lecturers expence and there is a nice 20k or so for someones pocket. Didn't get results yet 8 weeks after exams and not sure if i want them now, definitly not paying another 1000e to register with SEI so i can become a registered gangster, hush hush


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    hi, i completed the ber course about eight weeks ago. As far as i can see its going to be a total farce. Most of the flaws and problems have been mentioned in thread already. A couple of points that id like to mention, firstly , what use is a ber cert calculated of drawings and specifications, it would be a miricale if the exact CDER and ber rating matched when the building is constructed. There is so much scope for error with everything covered up with assumptions and default values and we must have faith that our good honourable builders will construct dwellings/projects exactly by the book. So ber certs IMO of plans/drawings are not worth the (25euro)sheet of paper they are printed on. Its my opinion that every dwelling/building should have an air pressureisation test done before hand over and meet a minimum insulation standard in floors/walls and attic and all the other ber bullsh1te scrapped. If a dwelling is reasonably air tight and well insulated, then it will have a reasonable energy requirment. Secondly, with all the problems, faults and loopholes there is no possible way that this can be enforced or regulated. {who passed the 30,000/40,000 that recieved planning and built since jan 07}.Finally, with 12 people completing course the same week as myself and a good few repeating the exams,the money collected was over 23,000 euro. Take away the hotel room expence and lecturers expence and there is a nice 20k or so for someones pocket. Didn't get results yet 8 weeks after exams and not sure if i want them now, definitly not paying another 1000e to register with SEI so i can become a registered gangster, hush hush

    Indeed father .... did you at least get to keep the software version of the DEAP ?


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    Its my opinion that every dwelling/building should have an air pressureisation test done before hand over and meet a minimum insulation standard in floors/walls and attic and all the other ber bullsh1te scrapped. If a dwelling is reasonably air tight and well insulated, then it will have a reasonable energy requirment.
    This is all well and good in a rant, but what about houses that go above the minimum standard? What about people that what more than reasonable,

    The ideas are quite contractory, you complain that their are too many default values, but also suggest that air-tightness and min-values give an acceptable indictation.


    The system is not perfect, but it is far better than no system. The problem is the amount of people you did the course whose knowledge is far from par, these will quickly be out of work, agents, developers, and designers will rather quicker weed out the bad eggs.


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    It must be understood the BER assumes many standardisations and defaults during the calculation process. This is in order for all dwellings to be compared the same. Issues like occupancy, electrical usage, hot water usage etc, are all standardised pro rata to the floor area. It is beyond the scope of the BER and the EPBD to specialise for individual personal situations.

    The BER situation relies very heavily on 'truthfulness'... truthfulness of the person who prepared the drawings for calculation, truthfulness of information supplied by client / builder, truthfulness of assessor (although his / her calculations are open to audit and subsequent action). I dont like the fact that the assessor is not required to visit the building, that means they never will.

    My main gripe is that there is no legal requirement for a fully qualified competent informed professional to be on-site for the duration of the build to ensure all these possible 'untruthfulnesses' are witnessed. This should be made a legal requirement. The current certification system is a farce and a shambles. A BER cert can be done on completion of a build and this calculation may show that the building doesnt comply with either the u value regulations nor the MPCDER rating, yet it has no power if the building has already been certified by an uneducated PI holder.
    The new regulations are going to highlight this even more...... how many certifiers are actually going to calculate the EPC??? very few in my opinion... they will simply look at the insulation in the house... does that give a u value of 0.24????... yes, grand, stage signed off, €600 please....
    They will be expected to be able to input information into the DEAP software... will they know what a boiler interlock is??? will they chase window manufacturers to find out their declared u values?? will they be able to input a thermal bridging factor??? will they feck!!

    It also calls into question who exactly signs these certs of compliance... but thats for another day and a totally other argument.

    Its my fear that he BER will simply be a tool for estate agents, nothing more. There is nowhere near enough emphasis put onto the CO2 emission rating on a BER cert... people only want to see the rating and the subsequent change ofmarket value.. they dont care if they emit 3 tonnes of CO2 once they have their A rating.......

    I disagree with everything fatherbuzzy posted.

    And finally, i think its very misleading for people to be throwing out figure like €300 - 500 for a BER cert. that may be fine for a builder with a development of 100 houses or whatever, but if you are talking about a one-off 2500 sq ft house i predict you are looking at figures at least double... somewhere in the region of €600-800.... depending on the amount and accuracy of information supplied by the client / builder.


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sydthebeat wrote: »

    Its my fear that he BER will simply be a tool for estate agents, nothing more. There is nowhere near enough emphasis put onto the CO2 emission rating on a BER cert... people only want to see the rating and the subsequent change ofmarket value.. they dont care if they emit 3 tonnes of CO2 once they have their A rating.......
    The rating and CO2 emmissions are fairly closely linked. Obviously not all building with the same rating will have the same emissions, but two domestic buildings with the same area and same KW/m2y value will have very close carbon emmissions. The exception to this is of course were green electricty is used or similar situations.
    But the ratings HAVE to be done on a basis of floor, using gross CO2 values would be idiotic.
    And finally, i think its very misleading for people to be throwing out figure like €300 - 500 for a BER cert. that may be fine for a builder with a development of 100 houses or whatever, but if you are talking about a one-off 2500 sq ft house i predict you are looking at figures at least double... somewhere in the region of €600-800.... depending on the amount and accuracy of information supplied by the client / builder.
    It depends really, shop around. The same can be said about planning premission. For a simple PP package, say a GF extension you could pay in the region of €500 - €2000 depending on how you shop around.


  • Closed Accounts Posts: 495 ✭✭ardara1


    sydthebeat wrote: »
    It must be understood the BER assumes many standardisations and defaults during the calculation process. This is in order for all dwellings to be compared the same. Issues like occupancy, electrical usage, hot water usage etc, are all standardised pro rata to the floor area. It is beyond the scope of the BER and the EPBD to specialise for individual personal situations.

    This is correct - BER is a DESIGN TOOL for a part of our lives (The house) that creates CO2. The are other parts of our behaviour that also has environmental consequences - how we commute - how we travel - how we USE our house.

    The BER situation relies very heavily on 'truthfulness'... truthfulness of the person who prepared the drawings for calculation, truthfulness of information supplied by client / builder, truthfulness of assessor (although his / her calculations are open to audit and subsequent action). I dont like the fact that the assessor is not required to visit the building, that means they never will.

    It shouldn't - the person that does the assessment to allow a BER to be issued can be sued -plain and simple. If the have given information that is misleading his accreditation can revokes - can be fined up to 3000 Euro or sent to jail for 3 months - if I was an assessor i'd want more than a promise from the builder or architect.


    My main gripe is that there is no legal requirement for a fully qualified competent informed professional to be on-site for the duration of the build to ensure all these possible 'untruthfulnesses' are witnessed. This should be made a legal requirement. The current certification system is a farce and a shambles. A BER cert can be done on completion of a build and this calculation may show that the building doesnt comply with either the u value regulations nor the MPCDER rating, yet it has no power if the building has already been certified by an uneducated PI holder.


    The new regulations are going to highlight this even more...... how many certifiers are actually going to calculate the EPC??? very few in my opinion... they will simply look at the insulation in the house... does that give a u value of 0.24????... yes, grand, stage signed off, €600 please....
    They will be expected to be able to input information into the DEAP software... will they know what a boiler interlock is??? will they chase window manufacturers to find out their declared u values?? will they be able to input a thermal bridging factor??? will they feck!!

    The proposed Part L asked for commissioning of services to be signed off - for an air pressure test to test for permeability (leakiness) - and for accredited details to be signed off by a qualified person on site - ALL of these are there to ensure quality of construction - the BER assessor should ask for evidence of ALL these. If he doesn't know what a boiler interlock is - or he can't give a compedent U-value - HE SHOULDN"T BE ACCREDITED

    It also calls into question who exactly signs these certs of compliance... but thats for another day and a totally other argument.

    Its my fear that he BER will simply be a tool for estate agents, nothing more. There is nowhere near enough emphasis put onto the CO2 emission rating on a BER cert... people only want to see the rating and the subsequent change ofmarket value.. they dont care if they emit 3 tonnes of CO2 once they have their A rating.......

    I disagree with everything fatherbuzzy posted.http://static.boards.ie/vbulletin/images/smilies/frown.gif;)

    And finally, i think its very misleading for people to be throwing out figure like €300 - 500 for a BER cert. that may be fine for a builder with a development of 100 houses or whatever, but if you are talking about a one-off 2500 sq ft house i predict you are looking at figures at least double... somewhere in the region of €600-800.... depending on the amount and accuracy of information supplied by the client / builder.

    In my experience in UK certs were being supplied initially for 120 - 200 quid - THEN the assessor suddenly realised their neck was on the chopping block - and how much real work was involved in getting information from not so much the architect but the builder (Architect at compliance stage fair enough) - At this level the assessor become an Energy Consultant - this is where the expertise is used and proper money paid - £400-700, as a consultant


  • Closed Accounts Posts: 495 ✭✭ardara1


    sydthebeat wrote: »
    It must be understood the BER assumes many standardisations and defaults during the calculation process. This is in order for all dwellings to be compared the same. Issues like occupancy, electrical usage, hot water usage etc, are all standardised pro rata to the floor area. It is beyond the scope of the BER and the EPBD to specialise for individual personal situations.

    The BER situation relies very heavily on 'truthfulness'... truthfulness of the person who prepared the drawings for calculation, truthfulness of information supplied by client / builder, truthfulness of assessor (although his / her calculations are open to audit and subsequent action). I dont like the fact that the assessor is not required to visit the building, that means they never will.

    My main gripe is that there is no legal requirement for a fully qualified competent informed professional to be on-site for the duration of the build to ensure all these possible 'untruthfulnesses' are witnessed. This should be made a legal requirement. The current certification system is a farce and a shambles. A BER cert can be done on completion of a build and this calculation may show that the building doesnt comply with either the u value regulations nor the MPCDER rating, yet it has no power if the building has already been certified by an uneducated PI holder.
    The new regulations are going to highlight this even more...... how many certifiers are actually going to calculate the EPC??? very few in my opinion... they will simply look at the insulation in the house... does that give a u value of 0.24????... yes, grand, stage signed off, €600 please....
    They will be expected to be able to input information into the DEAP software... will they know what a boiler interlock is??? will they chase window manufacturers to find out their declared u values?? will they be able to input a thermal bridging factor??? will they feck!!

    It also calls into question who exactly signs these certs of compliance... but thats for another day and a totally other argument.

    Its my fear that he BER will simply be a tool for estate agents, nothing more. There is nowhere near enough emphasis put onto the CO2 emission rating on a BER cert... people only want to see the rating and the subsequent change ofmarket value.. they dont care if they emit 3 tonnes of CO2 once they have their A rating.......

    I disagree with everything fatherbuzzy posted.

    And finally, i think its very misleading for people to be throwing out figure like €300 - 500 for a BER cert. that may be fine for a builder with a development of 100 houses or whatever, but if you are talking about a one-off 2500 sq ft house i predict you are looking at figures at least double... somewhere in the region of €600-800.... depending on the amount and accuracy of information supplied by the client / builder.
    Mellor wrote: »
    The rating and CO2 emmissions are fairly closely linked. Obviously not all building with the same rating will have the same emissions, but two domestic buildings with the same area and same KW/m2y value will have very close carbon emmissions. The exception to this is of course were green electricty is used or similar situations.
    But the ratings HAVE to be done on a basis of floor, using gross CO2 values would be idiotic.


    It depends really, shop around. The same can be said about planning premission. For a simple PP package, say a GF extension you could pay in the region of €500 - €2000 depending on how you shop around.

    Mellor - how do you do this multi quote thing?


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  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    ardara1 wrote: »
    Mellor - how do you do this multi quote thing?
    If you are trying to quote from multiple sources, click the multiquote_off.gif button in each message then reply with reply.gif
    but I think you already did that above.

    I think you may be refering to the posts where a large post is separated into multiple quote boxes to reply to comment individually.
    In that case, quote as normal, but separate each section you want to reply to. highlight each section one at a time, then click the quote.gif button, this wraps
    tags around the text. You can also manually type this text in.

    It should look something like so:
    [ QUOTE]first quote section[ /QUOTE]
    [COLOR="Red"]Your text here[/COLOR]
    
    [ QUOTE]second quote section[ /QUOTE]
    [COLOR="red"]your text here[/COLOR]
    


    Hope that helps,


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    ardara1 wrote: »
    The proposed Part L asked for commissioning of services to be signed off - for an air pressure test to test for permeability (leakiness) - and for accredited details to be signed off by a qualified person on site - ALL of these are there to ensure quality of construction - the BER assessor should ask for evidence of ALL these. If he doesn't know what a boiler interlock is - or he can't give a compedent U-value - HE SHOULDN"T BE ACCREDITED

    Ardara1, you have slightly misconstrued my point, i wasn't taking about an 'assessor' not knowing, I'm talking about 'certifiers' not knowing. I'm specifically referring to the 'Architects' / 'Engineers' that are regularly engaged to certify stages of work to be in compliance with the building regs. Its my opinion that many of these 'certifiers' do not know nor understand the current part L, and certainly are not equipped to make calculations for the proposed amendments.

    Regarding the information to be supplied issue.... once the client / builder signs all the information supplied and signs a declaration stating that to the bests of his knowledge its all true, the the assessor is indemnified... if a future audit shows wrong information was supplied its not the assessor whose head is on the block... Believe me, the most important practice for being an assessor is keeping the paper trail, and getting everything 'signed off'... covering your own ass in other words....

    Mellor, whilst i agree that the rating and the co2 emissions are related, theoretically its still feasible to get an A rating house that fails the MPCDER....
    Youre missing my point slightly though... there is not enough emphasis put onto the co2 emissions value.. its all about the rating... In my opinion the co2 emissions value is immeasurably more important. perhaps this will become clear if (when) a carbon tax is placed on dwellings...... when that happens people will be looking at the co2 value of the BER a lot closer than they currently are.


  • Closed Accounts Posts: 495 ✭✭ardara1


    sydthebeat wrote: »
    Ardara1, you have slightly misconstrued my point, i wasn't taking about an 'assessor' not knowing, I'm talking about 'certifiers' not knowing. I'm specifically referring to the 'Architects' / 'Engineers' that are regularly engaged to certify stages of work to be in compliance with the building regs. Its my opinion that many of these 'certifiers' do not know nor understand the current part L, and certainly are not equipped to make calculations for the proposed amendments.

    I agree 100% Syd - my misunderstanding! - and they don't at present even certify compliance isn't the magic statement - 'substantially in compliance with'

    Regarding the information to be supplied issue.... once the client / builder signs all the information supplied and signs a declaration stating that to the bests of his knowledge its all true, the the assessor is indemnified... if a future audit shows wrong information was supplied its not the assessor whose head is on the block... Believe me, the most important practice for being an assessor is keeping the paper trail, and getting everything 'signed off'... covering your own ass in other words....

    Right again - but I believe that supplying inaccurate information to complete an assessment is liable to the same penalty? (A building control officer may ask for the cert - if not supplied - penalties also)

    Mellor, whilst i agree that the rating and the co2 emissions are related, theoretically its still feasible to get an A rating house that fails the MPCDER....
    Youre missing my point slightly though... there is not enough emphasis put onto the co2 emissions value.. its all about the rating... In my opinion the co2 emissions value is immeasurably more important. perhaps this will become clear if (when) a carbon tax is placed on dwellings...... when that happens people will be looking at the co2 value of the BER a lot closer than they currently are.

    Carbon from building become pretty insignificant (When built to the new standards) - it's how they're used is the real crunch. A semi 100m2 reasonably built now can be restricted to 2 tonne co2 for'standardised usage'
    - your car will do that and more - then your wifes car - then the flights - then the air miles. etc etc. I would rather we concentrate on getting current standards enforced and looked at the other sources. I've a feeling that this concentration on ever pushing the standards for new build lets the rest of the buggers off the hook.

    The EPBD wasn't initiated for new build - it was for the majority of existing crappy housing we have.


  • Registered Users, Registered Users 2 Posts: 21,676 ✭✭✭✭smashey




  • Closed Accounts Posts: 495 ✭✭ardara1


    smashey wrote: »

    Can't master the multi quotie thing yet - I thought I was being clever!


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    i agree that its the usage that counts, however i don't consider 2 tonnes per annum insignificant. I coming from a construction point of view.... so ill tackle the car / airplane issues separately.

    The second hand homes situation will begin to be dealt with after jan 01 2009 (i hope) and eventually this will get regulated. I seriously believe the only way for politicians to be proactive and serious about this is to introduce 'carbon taxes' (for want of a better description)....... people will think seriously then about how they produce and use energy.


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  • Registered Users, Registered Users 2 Posts: 21,676 ✭✭✭✭smashey


    Try multi quoting the last three posts. Hit this yoke multiquote_off.gif on all three and on the last of the three, click this boyo reply.gif.
    You will the see all three quotes as Mellor said earlier like this...
    [ QUOTE]first quote section[ /QUOTE]
    [COLOR=black][B]Post your comment here
    [/B][/COLOR]
    [ QUOTE]second quote section[ /QUOTE]
    [COLOR=black][B]Post your comment here[/B][/COLOR]
     
    [ QUOTE]third quote section[ /QUOTE]
    [COLOR=black][B]Post your comment here
    [/B][/COLOR]
    
    Try it and see, if it doesn't work, I'll edit it.


  • Registered Users, Registered Users 2 Posts: 46,550 ✭✭✭✭muffler


    Quote from the charter: "Do not reply to a post by inserting text within the quoted post".

    Next time this happens red cards are gonna be shown

    Do you understand that ardara1?


  • Closed Accounts Posts: 495 ✭✭ardara1


    muffler wrote: »
    Quote from the charter: "Do not reply to a post by inserting text within the quoted post".

    Next time this happens red cards are gonna be shown

    Do you understand that ardara1?

    Yes I understand perfectly now.

    Take a chill pill Muffler - you can see from my posts that I had asked twice for assistance in doing a multi quote thing - I'm pretty new to this forum reply thing and I didn't start by reading the charter.

    Thanks for the assistance offered by others - I promise to attempt a multi post next opportunity!


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sydthebeat wrote: »
    Its my opinion that many of these 'certifiers' do not know nor understand the current part L, and certainly are not equipped to make calculations for the proposed amendments.
    Can I ask what you are basing this on? Its true that many probably understand part L, but these people hav no need to. Another section of the design team will. Somebody will always be better than someone else in sepecialist areas


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    Mellor wrote: »
    Can I ask what you are basing this on? Its true that many probably understand part L, but these people hav no need to. Another section of the design team will. Somebody will always be better than someone else in sepecialist areas

    I base this on the following:

    The Law Society operate a 'closed shop' in who may be considered acceptable to certify compliance with building regulations. These include qualified Architects, Various Engineers, and persons who have been self employed in work commensurate to that of an Architect for more than 10 years and are over 35 years of age. However, it doesnt take into account the actual knowledge of these persons regarding construction and regulations, just whether they have PI insurance and can properly word certifications.
    The specific profession that is educated to a high level in building regulations are Architectural Technician / Technologists. This profession has no statutory recognition in Ireland and thus has no power to sign certs. Many architectural practices have ridiculous situations where Technician prepare the technical documents to ensure compliance with regulations, attend on-site to ensure proposer construction, but then need to go to their primary to get a cert signed off. The primary in most cases is putting their name to certify something they knwo very little about. My issue is, in domestic house building, the certifiers are usually small practices or one-man bands, with little or no academic eduction regarding the regulations. I know this from both first hand and analogical sources. More often than not certifiers simply check to see what thickness and type of insulation is incorporated, whilst this is better than nothing, its not good enough.

    The BER and DEAP software will give calculations to show whether a building complies with Part L in both elemental and overall u values, and compliance with MPCDER. However my problem is that these calculations hold no weight whatsoever. The building may be shown by calculation to fail compliance, yet the building may already be certified to say it does comply... that my main issue....
    Why isn't compliance with Part L statutorily connected to the BER??? That would make a mountain of sense..... a print out of the calculations can be included to compliance and included in the certification package.

    perhaps you have a different take on this Mellor, are you saying that you dont think the actual 'certifiers' need to know what they are certifying once 'someone else in the design team does'..??? Id love to see that one go to court.....


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  • Registered Users, Registered Users 2 Posts: 21,676 ✭✭✭✭smashey


    sydthebeat wrote: »
    The specific profession that is educated to a high level in building regulations are Architectural Technician / Technologists. This profession has no statutory recognition in Ireland and thus has no power to sign certs.
    That may soon change. :)


  • Registered Users, Registered Users 2 Posts: 46,550 ✭✭✭✭muffler


    ardara1 wrote: »
    Take a chill pill Muffler..............................................and I didn't start by reading the charter.
    The charter is there for a reason and its the first thing anyone should read before posting in any forum. Another point is that arguing with a moderator isnt exactly the best way to excuse your error.

    Breach of charter = red card. Maybe I did take that chill pill before I posted my last comment as strictly speaking you should be gone for a breach of the charter but I would rather advise first. In return I expect people to acknowledge their mistake rather than post smart arsed comments.


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sydthebeat wrote: »
    The specific profession that is educated to a high level in building regulations are Architectural Technician / Technologists. This profession has no statutory recognition in Ireland and thus has no power to sign certs.
    I agree that this is unfair, and for the record many of us around here are hit by this one. Although that said many ATs are in a position to sign of on work through conditions you posted,
    The BER and DEAP software will give calculations to show whether a building complies with Part L in both elemental and overall u values, and compliance with MPCDER. However my problem is that these calculations hold no weight whatsoever. The building may be shown by calculation to fail compliance, yet the building may already be certified to say it does comply... that my main issue....
    Why isn't compliance with Part L statutorily connected to the BER??? That would make a mountain of sense..... a print out of the calculations can be included to compliance and included in the certification package.
    Because they are separate issues. In theory a building could achieve pass through a BER/DEAP calc even though it fails Part L. It won't comply with building regs as it fails. It has to pass them both, passing the first doesn't override part L. The reason they are not linked is because part L only applies to new builds, BER applies to all housing stock.
    perhaps you have a different take on this Mellor, are you saying that you dont think the actual 'certifiers' need to know what they are certifying once 'someone else in the design team does'..??? Id love to see that one go to court.....
    My point is that many architects do not understand part L, the ones that don't know don't need to for various reasons. On a large job it is impossible for a single person to know for sure that every aspect of a job is in compliance. The team must do it as a team. Consider a fire cert to comply with part B, on a large job a consultant FC engineer might carry out the work and return it. The project leader signs off on the work compling with the regs (even though he can't possibably check the FC).
    smashey wrote: »
    That may soon change. :)
    fingers crossed ;)


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    I cant agree with your second point there Mellor. They most certainly are not separate.

    First, Part L of the Building Regulations. You should know that the Heat Energy Rating used in previous versions of the Building Regulations is now gone and has been replaced by the Domestic Energy Assessment Procedure (DEAP). This software will calculate the energy efficiency of the building and its Carbon Dioxide Emissions Rating (CDER). Carbon Dioxide is now a key indicator for compliance under Part L. For those of you that are not familiar with this method of compliance I strongly recommend that you down load your free copy from the SEI(Sustainable Energy Ireland) web site and plug in your buildings data to see if you comply. If you don’t have the technical skills to do this then you should find somebody that has, (one of the newly trained BER assessors, in 2007). The CDER for your building is compared to a Maximum Permissible Carbon Dioxide Emission Rating (MPCDER) to determine compliance. So can you see how carbon dioxide has replace heat energy as the method of demonstrating compliance?
    DEAP is also the method of calculating energy efficiency in buildings as required under Article 3 of the Energy Performance Buildings Directive: - “Member States shall apply a rnethodology, at national or regional level. of calculation of the energy performance of buildings on the basis of the general framework set out in the Annex. Pans 1 and 2 of his framework shall be adapted to technical process. in accordance with the procedure referred to in Article 14(2}, taking into account standards or norms applied in Member State legislation. This methodology shall be set at national or regional level. The energy performance of a building shall be expressed in a transparent manner and may include a C02 emission indicator”.
    So you see the DEAP is the link between the new Part L of the Building Regulations and the Building Energy Rating (BER) given under the EU Energy Performance In Buildings Directive.
    http://www.lcea.ie/Ber.asp

    The above describes my point more clearly. DEAP calculations and compliance with Part L are directly linked, compliance with Part L requires DEAP calculations. My point is that its not done, nor is this glaring omission picked up upon by the Law Society. BER assessors are currently the most qualified practitioners to certify compliance with Part L. You point about them having to pass both is incorrect.




    Part L of the Building Regulations requires that, for new dwellings, the CO2 emissions associated with energy use for space heating, water heating, ventilation and lighting are limited insofar as is
    reasonably practicable. This provision will apply to new dwellings from 1st July 2006.
    Technical Guidance Document (TGD) L specifies that the DEAP methodology be used to show that the Carbon Dioxide Emission Rating (CDER) of the dwelling being assessed does not exceed that of a Reference dwelling for which the corresponding Maximum Permitted Carbon Dioxide Emission
    rate (MPCDER) is also calculated, both being expressed in units of kg CO2 per square metre per annum
    . The details of the Reference dwelling are specified in Appendix C of the TGD.

    the above is from http://www.sei.ie/getFile.asp?FC_ID=2493&docID=884
    the explanation of the DEAP methodology. Ad you can see DEAP is supposed to be used to calculate CDER. My point is that by the time an assessor does his BER calculations (through DEAP) the dwelling will already be 'certified' by the professional with the PI insurance, and my be shown not to comply.... and in that situation its my opinion that the DEAP calculation doesnt hold weight because the BER isnt intended to show compliance with the regs. Do you understand where im coming from on this?? I have a habit of over defining and loosing my point... i hope im not doing that.

    I accept your point regarding larger products, fire certs etc, but on this issue i am mainly dealing with dwellings.


  • Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    Mellor wrote: »
    Because they are separate issues. In theory a building could achieve pass through a BER/DEAP calc even though it fails Part L. It won't comply with building regs as it fails. It has to pass them both, passing the first doesn't override part L. The reason they are not linked is because part L only applies to new builds, BER applies to all housing stock.
    fingers crossed ;)

    DEAP is the methodology for demostrating compliance with Part L

    DEAP is also the methodology for determining a BER label classification .

    The lable classification just "is" i.e. no pass / fail per se . After 2009 all buildings ( whatever the Part L compliance status ) will have to be labled at point of sale or letting . So plenty of Grade D E F classications will issue .
    Oh what fun will we have when buildings recently certified with compliance with Part L say in 2003/4/5 are found by BER cert classications not to .

    Most busy one / two man bands who's skills and time are stretched over all building matters ( design , planning , fire , structure ,drainage , contracts , tendering , etc.... ) will have been certing compliance ( with respect to Part L ) on the basis of elemental u values and % glazing and stop at that .These guys will typically have busted a gut to acheive even that with contractors . ( See thread on "look what developers are up to" ) I hope there is not too much pain ahead , for anyone .

    Our lack of Local Authority regulation ( UK style ) has allowed this to happen.
    In the absence of that system not appearing here anytime soon I beleive the wise course of action for any small practice is to develop a good working relationship with a good BER assesor . The knowledge gap has widened to require this I would say .

    ( I am sure Mellor you meant to say Draft Part L applies only to new builds , whereas Part L 2005 applies to all building types . )


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sydthebeat, I think you are still missing my point, I am fully aware of the above, there is nothing new there to me and my comments still stand imo
    sydthebeat wrote:
    First, Part L of the Building Regulations. You should know that the Heat Energy Rating used in previous versions of the Building Regulations is now gone and has been replaced by the Domestic Energy Assessment Procedure (DEAP). This software will calculate the energy efficiency of the building and its Carbon Dioxide Emissions Rating (CDER). Carbon Dioxide is now a key indicator for compliance under Part L.

    I have never once said anything contrary to this. But they are still separte issues.
    The above is from the current part L. So it only applies to dwellings built after its introduction. It is linked for new builds but not for housing stock, that is why they HAVE to be separate issues.
    DEAP is used for housing stock but it has nothing to do it part L.
    sydthebeat wrote:
    Why isn't compliance with Part L statutorily connected to the BER??? That would make a mountain of sense..... a print out of the calculations can be included to compliance and included in the certification package.
    This was your original comment.

    DEAP/BER is required for compliance with part L. As this applies to new builds.
    But Part L cannot included for compliance with DEAP/BER as it applies to all dwellings, most of which Part L does not apply. That is why they are separate. They may be linked in new builds were one is needed to comply with the other but for the most part they are separate.


    sydthebeat wrote:
    My point is that by the time an assessor does his BER calculations (through DEAP) the dwelling will already be 'certified' by the professional with the PI insurance, and my be shown not to comply.... and in that situation its my opinion that the DEAP calculation doesnt hold weight because the BER isnt intended to show compliance with the regs
    For a new build, where the current part L applies. The BER calcs will be done off the plans and compliance achieved. Testing after construction may or may not be carried out, but if it is the certs of compliance shouldn't be completed until it does.
    If it fails compliance after testing, then BER still holds weight as it proves it doesn't comply. Even if this isn't what it is intended to do.The cert of compliance doesn't indemnify any errors found after the fact. And if this did happen it would have to be fixed legally, although it might not happen


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sinnerboy wrote:
    Mellor wrote:
    Because they are separate issues. In theory a building could achieve pass through a BER/DEAP calc even though it fails Part L. It won't comply with building regs as it fails. It has to pass them both, passing the first doesn't override part L. The reason they are not linked is because part L only applies to new builds, BER applies to all housing stock.

    DEAP is the methodology for demostrating compliance with Part L

    DEAP is also the methodology for determining a BER label classification .

    You misunderstand me. I am aware there is no pass/fail per say for BER. My point was that a building could pass the DEAP requirement of part L, but still fail part L on another issue, DEAP doesn't cover all aspects, nor should it.

    sinnerboy wrote: »
    ( I am sure Mellor you meant to say Draft Part L applies only to new builds , whereas Part L 2005 applies to all building types . )


    No, I said what I meant.

    Draft part L applies to no buildings yet. It is a draft. When it comes in it will apply to new builds.
    The current part L applies to current new builds.
    The previous part L applies to buildings from that period.
    Alot of the countries dwellings have NO relevant part L as they pre-date the regs.


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    In the point you initially picked me up upon, i was talking about 'current Part L' regs, i havent deviated from that point.... im not talking about pre 2005 regs.....

    I have not at any point referred to 'existing housing stock'....... as sinerboys states, these will be dealt with when the time comes.


    in your post of 16.58, you seem to contradict yourself... you say at one point "DEAP is used for housing stock but it has nothing to do it part L." but immediately after state "DEAP/BER is required for compliance with part L"... i accept the the raison d'etre (sic) for DEAP is to deal with exisiting builds, but it is also the regulatory methodology to confer compliance with current regs.

    so my point again is:
    Its my opinion that the majority of dwellings currently being certified are being certified to be in compliance with Part L incorrectly..... sinnerboy described the situation correctly (and id even be surprised if they did a glazing % calculation..!!)... Now this may be laziness on the certifiers part, or, in my opinion, the more endemic problem of the unsuitability of those professionals that the law society accepts certification from.

    DEAP must be used in order for a certifier to ensure compliance with Part L ......
    (the CDER and the heat loss parts of the regs anyway... the
    the output of the space heating and hot water systems and limiting the heat loss from pipes, ducts etc are supplementary to this).
    Do you believe that this actually happens???

    i dont think that you are actually disagreeing with me.... i think we may be arguing two separate points.


  • Closed Accounts Posts: 495 ✭✭ardara1


    DEAP has been the only method of compliance with part L from 2006 (Doc published end 2005) - so who's been doing these calcs - more importantly - who's been checking these calcs?

    For a person to complete a DEAP calculation they must understand Part L totally! - even to the point where the can recognize the mistakes in Part L!

    BER assessors just VERIFY the design DEAP - has the builder built to the original DEAP calc - has he followed the spec for U-values - has he followed the details originally specified - has the heating /ventilation system been commissioned to the original target? - it is up to him to verify the result he has put into the DEAP cal for each input.

    The BER assessor is producing a DOCUMENT IN LAW - inabilty to produce such a certificate, or the evidential calculations for the input when asked for by Building Control can result in a 3000 fine, 3 month in prison and withdrawal of their license.

    Those who have under taken the responsibilty to produce such certificates beware - there are many customers out there who now under stand the principal involved and will challenge certificates when produced.

    I'd want to have my ass well covered - and be well paid for it! before handing one over.


  • Registered Users, Registered Users 2 Posts: 39,901 ✭✭✭✭Mellor


    sydthebeat wrote: »
    In the point you initially picked me up upon, i was talking about 'current Part L' regs, i havent deviated from that point.... im not talking about pre 2005 regs.....

    I have not at any point referred to 'existing housing stock'....... as sinerboys states, these will be dealt with when the time comes.

    The original point was on BER, not on the regs. I think most of us here are aware of what is require for part L, some of the replies have been on different issues. But my point was :
    sydthebeat wrote:
    Why isn't compliance with Part L statutorily connected to the BER???
    Compliance with part L can't to included with BER as part L only applies to current buildings, BER applies to all stock. BER is a rating, not a requirement for compliance. That is all.
    Everything else, such as DEAP needed to prove compliance with part L is different, here the two items are link, but it doesn't and can't work both ways.

    in your post of 16.58, you seem to contradict yourself... you say at one point "DEAP is used for housing stock but it has nothing to do it part L." but immediately after state "DEAP/BER is required for compliance with part L"... i accept the the raison d'etre (sic) for DEAP is to deal with exisiting builds, but it is also the regulatory methodology to confer compliance with current regs.
    I see no contradiction. I didn't say DEAP never has anything to do with part L. Why would I?
    I said DEAP has nothing to do with part L when used for housing stock, its a function of BER and the buildings directive. Both the two comments in commas above are true. You sort of posted them below with a different wording.






    And Ardara, you're dead right. Assessors beware is putting it lighty. Alot of people seam to think it is a handy side number, when it is anything but.


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