RE: Vapor Barriers for Wood[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: Vapor Barriers for Wood
- From: Albert Meyer <Ameyer(--nospam--at)martinaia.com>
- Date: Wed, 10 Jan 2001 11:52:01 -0500
I have seen a major developer we design for typically wrap the end of the beam with continuous aluminum flashing (termite shield) and then grouting the pocket solid around the aluminum. My concern with this is that I see the potential for moisture to condense on the surface of the metal in humid conditions since the metal flashing is in direct contact with the concrete and generally remains cool. It would seem that this detail may draw moisture to the end of the beam at the pocket. I know that there typically is no attachment of the beam to the wall, so the wrapped and grouted detail would seem to provide more support for lateral loads than the air gap detail. I know this doesn't completely answer the question, but I hope it helps a little.
Albert J. Meyer, Jr., P.E.
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