[VAC] Re: Insulation

[Jon Fitz <jon.fitz@xxxxxxxxxx>]

Although I've never seen the interior of an AS wall, I would definitely
recommend fiberglass insulation.  I don't mean to be funny, but think of it
this way:  would you rather spend a cold night between a couple of boards of
foam or a blanket of flexible insulation? (OK, so maybe the fiberglass would
be itchy...)  If you can fit the foam tightly, it may well be better.  So,
it might work really well under a floor. But, if there are gaps (as
installed or later on due to constant bending stresses) there will be
serious heat leaks.  I would think simple friction would be enough to hold
tightly packed fiberglass in place (the thinnest products are designed for
3.5" studwalls).  But, if you believe in overkill like me, use some
permanently flexible spray adhesive.

I lived in an old mill house as a grad student.  I found that steel wool
worked very nicely to keep mice from coming through pipe chases and the
like.  You will want to pick something else for this application, but you
get the idea.