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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!csd.unb.ca!adminteam.cs.upei.ca!leath
- From: leath@UPEI.CA (Steve Leath)
- Subject: Re: Blown-In Insulation & Vapor Barriers
- Message-ID: <leath.9.722008323@UPEI.CA>
- Sender: news@jupiter.sun.csd.unb.ca
- Organization: University of Prince Edward Island, CANADA
- References: <lggg4qINNfn0@news.bbn.com>
- Distribution: na
- Date: Tue, 17 Nov 1992 13:52:04 GMT
- Lines: 31
-
- In article <lggg4qINNfn0@news.bbn.com> isidro@BBN.COM (Isidro Castineyra) writes:
- >From: isidro@BBN.COM (Isidro Castineyra)
- >Subject: Blown-In Insulation & Vapor Barriers
- >Date: 17 Nov 1992 00:45:14 GMT
- >A neighbour of mine had his house insulated by blowing cellulose into
- >the exterior walls. He swears by the process, and his house does feel
- >much tighter than mine (the houses are almost identical). I have
- >heard that because it is almost impossible to install a vapor barrier,
- >the insulation can trap humidity inside the walls. This could damage
- >the structure in the long run. What is the net-wisdom on this?
- >
- >Thanks,
- >Isidro
- >
- >
- >Isidro Castineyra (isidro@bbn.com)
- >Bolt Beranek and Newman, Incorporated (617) 873-6233
- >10 Moulton Street, Cambridge, MA 02138 USA
- >
- >
- >
- >
- Actually, one can use vapor barrier paints, some are rated the same as 4 to
- 6 mil plastic. In fact using these paints correctly can be better than
- plastic, since you can coat the entire interior surface without any breaks.
- Many houses have vapor barrier plastic on the outside walls up to the
- ceilings, yet, vapor can go up through the ceiling into the upper floor
- cavity and out the wall above the ceiling and below the next floor causing
- the same humidity problems.
-
- Steve Leath leath@upei.ca
-