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On Feb 24, 3:22 pm, Speedy Jim <v...@nls.net> wrote:
> Esche wrote:
> > We moved in our house (East European Country Home, as it is called;
> > cedar shackle roof, brick facade, plaster inside) three years ago and
> > enjoy it very much. However, the insulation is poor so that our
> > heating bills are killing us (if we heat the whole house in the
> > winter: up to $900 per month). I've been researching how to insulate
> > the walls and also tried to get some expert advice. It seems like
> > blowing cellulose into the space between outside brick wall and inside
> > plaster wall is the right thing to do.
>
> > Now, my architect relatives/friends (five of them) from Germany tell
> > me if there is no vapor barrier between living space and insulation in
> > the wall, moisture from the living space might make it through the
> > plaster wall through capillary action, and if the moisture doesn't
> > make it out anymore then there might occur a mold problem. There must
> > be a vapor barrier between living space and insulation. Currently the
> > moisture that gets through the plaster walls gets carried away since
> > there is a draft going through the space between the joists.
>
> > So my question is how to put a vapor barrier into the wall without
> > taking the plaster off? Or are the plaster walls enough of a vapor
> > barrier already?
>
> > If anybody has an idea, please let me know.
>
> > Thank you,
> > Wilko
>
> Thorough discussion
here:http://www.eere.energy.gov/consumer/your_home/insulation_airsealing/i...
>
> Commercial paint vapor
retarders:http://www.epaintstore.com/paint/primer_menu.htm
>
> Yes, it is important to control vapor transmission into
> the insulation.
>
> Before you go too far, verify that the house actually has
> 2 X 4 stud wall construction. If the brickwork is
> actually the masonry "frame" of the house (not merely facade)
> there may be only 1" of air space betweeen the plaster and brick.
>
> Jim
Thanks, Jim, for the advice. I had heard about the paint vapor barrier
before, but was never sure whether they really were effective. I
suspected they were just some marketing move of some paint companies
who want to make you believe it so that you buy their stuff. But if it
is on a government website that gives it more credibility.
As you suggested I will also check the 2 x 4 stud wall construction.
Thanks again,
Wilko
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Re: Vapor barrier for cellulose insulation
