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Anonymous_User Absent Member.
Absent Member.
1281 views

Insulation Question



My GF lives in a house with a very steeply-pitched roof. The second
floor looks like this:

/\
/ \
/ \
/ \
/ \
/ \
/____________\
/| |\
/ | | \
/ | | \
/ | | \
/ |living space| \
/ | | \
/attic | |attic \
/ space | |space \



The second floor is hot as hell in summer and cold as hell in winter. I
checked and found that there is *no* insulation between the 'attic
space' and the 'living space'. Would it be a good idea to put
foil-backed insulation on the outside of the living space walls? I just
happen to have a quantity of it that I'm not using.

Labels (1)
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3 Replies
Anonymous_User Absent Member.
Absent Member.

Re: Insulation Question

Assuming you already have a vapor barrier , yes. normally the foil
points into the living area to reflect the heat.

Another thing you will want to look at is increasing the air flow to
the area. more air exchange = more even temps.

The layers should be:

Living area
Sheetrock/wallboard
vapor barrier
insulation
open area
roof
shingles
outside

--
Timothy Leerhoff
Novell Volunteer Sysop
"Some people drink from the fountain of knowledge, others gargle"
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Anonymous_User Absent Member.
Absent Member.

Re: Insulation Question

Timothy Leerhoff,

> Assuming you already have a vapor barrier , yes. normally the foil
> points into the living area to reflect the heat.
>
> Another thing you will want to look at is increasing the air flow to
> the area. more air exchange = more even temps.
>
> The layers should be:
>
> Living area
> Sheetrock/wallboard
> vapor barrier
> insulation
> open area
> roof
> shingles
> outside
>


Thanks. I was thinking the foil needed to face out to keep out the
heat. I don't know if there's a vapor barrier or not; I guess I have to
take a closer look. I'll wait for a cool day. 😉
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Anonymous_User Absent Member.
Absent Member.

Re: Insulation Question

> Thanks. I was thinking the foil needed to face out to keep out the
> heat. I don't know if there's a vapor barrier or not; I guess I have
> to take a closer look. I'll wait for a cool day. 😉


Insulation is put on from the inside. The ears of foil are to staple
through. This will leave you with a small air pocket on the outside,
about 1/2" between the insulation and outside wall (assuming you were
going to put what we call buffalo board on that surface). This helps
with keeping the moisture out as the air can flow carrying what little
moisture in the air there is out a vent. Thus preventing ice from
forming on the under side fo teh roof surface.

--
Timothy Leerhoff
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