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Posted by Avasa on April 11, 2008, 8:45 am
can i get some input on what layers to use on a new (eco-ish)
construction in cold canada? i am thinking of (from outside to inside)
siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
insulation, reflective vapor barrier, firring, drywall.
do i need typar outside?
also how common is it for mice to eat through PEX pipe? common enough
that i should go for copper?
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Posted by hawgeye on April 11, 2008, 7:12 pm
> can i get some input on what layers to use on a new (eco-ish)
> construction in cold canada? i am thinking of (from outside to inside)
> siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
> insulation, reflective vapor barrier, firring, drywall.
> do i need typar outside?
What's with all the firring? I would use the house wrap, and if you're
trying to go eco-ish, skip the fiberglass and go with cellulose.
> also how common is it for mice to eat through PEX pipe? common enough
> that i should go for copper?
I've never heard of mice eating PEX, but I guess if they're hungry enough.
The mice around here prefer PVC.
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Posted by marson on April 11, 2008, 8:59 pm
> can i get some input on what layers to use on a new (eco-ish)
> construction in cold canada? i am thinking of (from outside to inside)
> siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
> insulation, reflective vapor barrier, firring, drywall.
> do i need typar outside?
> also how common is it for mice to eat through PEX pipe? common enough
> that i should go for copper?
Never heard of mice eating through pex.
I agree that cellulose is a good idea. I also think firring is a good
idea. It will help prevent out of plane issues with butt joints, and
if you are using cedar, it will prevent cupping which is a problem
with cedar on foam. Building paper is optional IMO. It can be
another insurance layer for water intrusions, but you could also use
strips of it as sort of z flashing at the top of every horizontal
seam. Haven't really heard much about a reflective barrier inside,
but i imagine it would help.
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Posted by ransley on April 12, 2008, 9:42 am
> can i get some input on what layers to use on a new (eco-ish)
> construction in cold canada? i am thinking of (from outside to inside)
> siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
> insulation, reflective vapor barrier, firring, drywall.
> do i need typar outside?
> also how common is it for mice to eat through PEX pipe? common enough
> that i should go for copper?
Foamboard outside can trap moisture in the fiberglass insulation, it
could mold.
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Posted by RicodJour on April 12, 2008, 10:07 am
> can i get some input on what layers to use on a new (eco-ish)
> construction in cold canada? i am thinking of (from outside to inside)
> siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
> insulation, reflective vapor barrier, firring, drywall.
> do i need typar outside?
> also how common is it for mice to eat through PEX pipe? common enough
> that i should go for copper?
Visit the Building Science web site and do whatever they recommend.
R
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> construction in cold canada? i am thinking of (from outside to inside)
> siding, firring, 1"rigid foam, 7/16"osb, 2x6 with white fibreglass
> insulation, reflective vapor barrier, firring, drywall.
> do i need typar outside?