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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
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Vapor barrier for cellulose insulation
