syarn
Silver Member
in northern USA buildings; when does the IBC 2006 require the vapor barrier on the "warm side" of the exterior wall to control moisture?
chapter & verse please. thx u.
it seems to me that zone 4c Marine is southernmost climate that the code calls for the vapor retarder per IBC 2009 section 1405.3 vapor retarders....
is there an online tool or calculator that goes beyond the code and analyzes when the vapor retarder is of value?
chapter & verse please. thx u.
it seems to me that zone 4c Marine is southernmost climate that the code calls for the vapor retarder per IBC 2009 section 1405.3 vapor retarders....
is there an online tool or calculator that goes beyond the code and analyzes when the vapor retarder is of value?