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Perimeter Insulation Limits

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Comments

  • #32
    BarneyMc
    Registered Users, Registered Users 2 Posts: 1,504 ✭✭✭BarneyMc


    BarneyMc wrote: »
    Hope to be putting in floors in about 5 weeks. What's an expansion strip. Also, has anyone gone ahead with 50mm PI? Having second thoughts now as I'm a bit afraid the tiles won't fix properly with so much insulation showing.

    Anyone?


  • #33
    sydthebeat
    Subscribers Posts: 42,961 ✭✭✭✭sydthebeat


    BarneyMc wrote: »
    Anyone?

    youd be looking at about 30 - 35mm between the plasterwork and skirting anyway.. so the remaining 15-20mm would be easily covered


  • #34
    tedimc
    Registered Users, Registered Users 2 Posts: 628 ✭✭✭tedimc


    I'm thinking of using 50mm all around as well BarneyMc, but as one of the guys say, no-one will walk around the inner inch of the wall that would have any impact.

    I don't think tiles not properly stuck down this close to the wall would be an issue. I'm not even using skirting, thinking of going with a shadow gap profile...


  • #35
    hexosan
    Registered Users, Registered Users 2 Posts: 1,740 ✭✭✭hexosan


    Ive installed 50mm as well


  • #36
    BarneyMc
    Registered Users, Registered Users 2 Posts: 1,504 ✭✭✭BarneyMc


    Do you lay the perimeter insulation first and then the floor insulation or vice versa? If it's the perimeter insulation then does it need to be nailed/glued to the wall to keep it there?


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  • #37
    hexosan
    Registered Users, Registered Users 2 Posts: 1,740 ✭✭✭hexosan


    Floor first in mine, then the perimeter insulation. I just stuck the odd bit of duct tape on it and the 1000 gauge plastic sheeting over all the insulation folded up the wall.


  • #38
    hexosan
    Registered Users, Registered Users 2 Posts: 1,740 ✭✭✭hexosan


    I suppose you could push the odd nail down through it into the floor ins to hold it in place but not sure what cold bridge issues that might cause.


  • #39
    mjp
    Registered Users, Registered Users 2 Posts: 1,028 ✭✭✭mjp


    Will be doing self build next year but wondering who is best to talk to regarding what type of insulation to use and what is most effective. Are these outlined by BER assessor and do I have to abide by these to meet grading standard or will my blocklayer or guy who prepares foundation guide me on this.

    Everyone seems to have differing opinions on whats the best option which is most confusing.


  • #40
    Gumbo
    Moderators, Society & Culture Moderators Posts: 42,318 Mod ✭✭✭✭Gumbo


    mjp wrote: »
    Will be doing self build next year but wondering who is best to talk to regarding what type of insulation to use and what is most effective. Are these outlined by BER assessor and do I have to abide by these to meet grading standard or will my blocklayer or guy who prepares foundation guide me on this.

    Everyone seems to have differing opinions on whats the best option which is most confusing.

    Your Preliminary BER assessment will outline exactly what you have to put in in order to comply with Part L. Your blocklayer should have no input into your insulation choices imho.

    You BER assessor will have to monitor the build in order to confirm that what he specified, actually goes in so that he can issue a final BER Certificate on completion.

    I know you want to opt out of the AC role, but will you have some sort of professional guidance for the build?


  • #41
    rampantbunny
    Registered Users, Registered Users 2 Posts: 907 ✭✭✭rampantbunny


    PROJECT K wrote: »
    it is recommended to use perimeter insulation on all external and both sides of internal walls on ground floor, and all external walls on first floor (particularly if using UFH) - a reputable UF company will generally recommend this along with a suitable expansion strip

    Is the insulation each side of the internal walls for:
    1. Expansion
    2. Reduction of heat loss from UFH heated screed to internal walls
    3. Both

    If 2, I'm not sure I understand the benefit if, your particular design ethos is to have block walls serving as thermal mass.


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  • #42
    BarneyMc
    Registered Users, Registered Users 2 Posts: 1,504 ✭✭✭BarneyMc


    rampantbunny wrote: »
    Is the insulation each side of the internal walls for:
    1. Expansion
    2. Reduction of heat loss from UFH heated screed to internal walls
    3. Both

    If 2, I'm not sure I understand the benefit if, your particular design ethos is to have block walls serving as thermal mass.

    I believe it's to reduce the loss of heat down into the subfloor/foundations.


  • #43
    rampantbunny
    Registered Users, Registered Users 2 Posts: 907 ✭✭✭rampantbunny


    BarneyMc wrote: »
    I believe it's to reduce the loss of heat down into the subfloor/foundations.

    So I take it that even with thermal blocks used as first/second course, they would still leak heat thus rob the screed?


  • #44
    BarneyMc
    Registered Users, Registered Users 2 Posts: 1,504 ✭✭✭BarneyMc


    rampantbunny wrote: »
    So I take it that even with thermal blocks used as first/second course, they would still leak heat thus rob the screed?

    I suppose to some extent but it's to do with reaction time also I believe.


  • #45
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    rampantbunny wrote: »
    Is the insulation each side of the internal walls for:
    1. Expansion
    2. Reduction of heat loss from UFH heated screed to internal walls
    3. Both

    If 2, I'm not sure I understand the benefit if, your particular design ethos is to have block walls serving as thermal mass.

    .


  • #46
    THE DON FANUCCI
    Banned (with Prison Access) Posts: 144 ✭✭THE DON FANUCCI


    hexosan wrote: »
    I've 200mm eps in the floor and I'm using 50mm strips for the perimeter insulation.



    how did you secure the perimeter insulation to the walls and damp proof membrane aswell ??


  • #47
    ker123
    Registered Users, Registered Users 2 Posts: 9 ✭ker123


    Anyone experience a problem with laying carpet grippers after installing 25mm perimeter insulation on both sides of internal walls??

    And is it best to lay the floor insulation 1st and perimeter insulation 2nd or vice versa??


  • #48
    Bad_alibi
    Registered Users, Registered Users 2 Posts: 294 ✭✭Bad_alibi


    ker123 wrote: »
    Anyone experience a problem with laying carpet grippers after installing 25mm perimeter insulation on both sides of internal walls??

    And is it best to lay the floor insulation 1st and perimeter insulation 2nd or vice versa??

    Floor then the perimeter insulation.


  • #49
    ker123
    Registered Users, Registered Users 2 Posts: 9 ✭ker123


    Bad_alibi wrote: »
    Floor then the perimeter insulation.

    Thanks


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