Actual TGD L 2007 Published

sinnerboy

is published - you can get it here

http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,16557,en.pdf

Builderfromhell

Thanks for that Sinnerboy.
Glanced over it, seems to be recommending what mosts posters here would want to do anyway.
I found 'Diagram 1' a bit confusing. Will have to read up on that.
Homebond are doing 'Right on the Site' meetings around the country explaining Doc. L as well as other things.

Mellor

I checked earlier today and nothing, must of just missed it.
nice work SB

Mellor

Builderfromhell wrote: »

Thanks for that Sinnerboy.
Glanced over it, seems to be recommending what mosts posters here would want to do anyway.
I found 'Diagram 1' a bit confusing. Will have to read up on that.
Homebond are doing 'Right on the Site' meetings around the country explaining Doc. L as well as other things.

just spotted a slight error in Diagram 1,
The roof U-Value arrow shouldn't be connected into the window and door box

ardara1

A few well hidden reversals from their consultation doc.
They'd suggested bring the values of the notional (reference doc) back to 0.24 - dropped.
notional build area for wall elements - new formula introduced - dropped - same as actual build

The boys in the DOE must have been put under some pressure from the Greens!

Air testing compulsory, inspection and quality systems for thermal bridging necessary.

Biggie - any body wanting to put under floor heating in - min 0.15 U-value!!!

sinnerboy

also
- roof u values revised from draft - was to .022 in all cases - now as per 2005
- min qty of low energy lighting - stripped out
- section added for existing dwellings
- 25% area for windows - rerquires u value of 2.0 ( was 2.2 )
- boilers min effeiceiency 86%

( don't mean to mod here but ) may I ask for folks to highlight other items

muffler

sinnerboy wrote: »

( don't mean to mod here but ) may I ask for folks to highlight other items

Take the horse to the water and all that jazz

Its down to people to voluntarily post their comments - we cant make them but point taken though. The more the merrier.

Mellor

i'm not happy about the lighting at all. It make no sense consider Gormley is pushing for a ban on incandescents

sinnerboy

EU forced it . Considered we were "closing our market" to other EU producers who make lamps . Go figure .

bauderline

I don't like the look of 0.15 for underfloor heating. What would be involved in attaining that value ? 2 x 50mm insulation in standard construction will bring us to 0.2 right ?

b.

Mellor

well it makes sense, heating the slab results in more heat leaving through the floor

ardara1

bauderline wrote: »

I don't like the look of 0.15 for underfloor heating. What would be involved in attaining that value ? 2 x 50mm insulation in standard construction will bring us to 0.2 right ?

b.

Depends on the size of the floor Perimeter length/Area - it'll take 125mm of polyiso approx.

Chimpster

ardara1 wrote: »

Depends on the size of the floor Perimeter length/Area - it'll take 125mm of polyiso approx.

Yeah, 100mm of Kooltherm would get you within the regulation for UFH if the Perim/Area is less than 0.4...

bauderline

For a perim / area ratio of 0.75 what would I need ?

... and how are you calculating that ?

b.

ardara1

Chimpster wrote: »

Yeah, 100mm of Kooltherm would get you within the regulation for UFH if the Perim/Area is less than 0.4...

Yes LESS than 0.4 - at 0.4 the Kooltherm at 0.021 Lambda will achieve 0.16.

Why would you use Kooltherm - is it not a fire board?

ardara1

bauderline wrote: »

For a perim / area ratio of 0.75 what would I need ?

... and how are you calculating that ?

b.

130mm Xtratherm or Kingspan Polyiso

Calculation is the length of the exposed perimeter divided by the area.

The value of the floor uninsulated is then calculated (Using a ground value of 2 - 1.5 in North) then insulated added.

The Xtratherm web site has a calculator for doing it, or you can buy one from the BRE website.

Villain

When do these reg's take affect i.e. anything granted planning after what date? or is it anything that commences afetr such a date?

Mellor

Regarding the floor U-value and UFH.
You may have to be a little above or below 0.15.
there should be a new document published oh heating systems soon, it will be covered in that

Mellor

Villain wrote: »

When do these reg's take affect i.e. anything granted planning after what date? or is it anything that commences afetr such a date?

Application
3. (1) These Regulations shall apply to the provision of a new dwelling
(including a flat), where works commence or take place, as the case may be, on
or after the 1st day of July 2008 except where—

(a) a planning application is made on or before the 30th day of June 2008
for planning permission or approval pursuant to the Planning and
Development Act 2000 (No. 30 of 2000) and where substantial work
has been completed by the 30th day of June 2009.

(b) a notice pursuant to the provisions of Part 8 of the Planning and
Development Regulations 2001 (S.I. No. 600 of 2001) has been published
on or before the 30th day of June 2008 and where substantial
work has been completed by the 30th day of June 2009.

(2) Regulations L2(e) and L3 shall apply to the installation of oil and gas
fired boilers after the 31st day of March 2008.

(3) For the purposes of these Regulations, “substantial work has been completed”
means that the structure of the external walls of the dwelling has been
erected. “DEAP” means the relevant version of the Dwelling Energy Assessment
Procedure published by Sustainable Energy Ireland.

Villain

Ok so if I got planning last year but haven't got the external walls up by the 1st of July this year I am binding to these new regulations?

Anyone got a link to the regulations before this? Not been lazy just can't search too mucg in work, cheers.

Mellor

If you got planing last year you have until "the 30th day of June 2009" for substantial work.
The older TGDs are available http://www.environ.ie/en/TGD/

Villain

Ah good man Mellor, if I bloody read the thing instead of glossing over I would have seen that, cheers

sinnerboy

Mellor wrote: »

If you got planing last year you have until "the 30th day of June 2009" for substantial work.
The older TGDs are available http://www.environ.ie/en/TGD/

but do yourself a favour ..... don't take "advantage" of this ......

ircoha

Under the section on Thermal bridging in the TGD L 2007, the following text appears on pg 19 at 1.3.3.2 (b):
<....Currently, the web document Accredited
Details downloadable from the Department of
Communities and Local Government (London)
website, www.communities.gov.uk contains a
significant number of such details....>

Has anybody suceeded in retrieving the document referred to?
Thanks.

archtech

ircoha wrote: »

Under the section on Thermal bridging in the TGD L 2007, the following text appears on pg 19 at 1.3.3.2 (b):
<....Currently, the web document Accredited
Details downloadable from the Department of
Communities and Local Government (London)
website, www.communities.gov.uk contains a
significant number of such details....>

Has anybody suceeded in retrieving the document referred to?
Thanks.

I have, but I think I got them on the planning portal than the the above website. There's some good details produced in a publication by the Scottish Executive, will post the link later

Mellor

commonities.gov refers to their version of TGD L,
which refers to est.gov.org, which is down at the minute

ircoha

Found this link which points, on the right hand side, to what I was after, as well as other useful stuff.

<Be aware that for the republic links, they are still at 2002 regs!>

http://www.builddesk.co.uk/sw56931.asp

The U value calculator looks mighty, albeit using UK values.