To Vent or Not to Vent?
Â
That is the Question.
Â
By Roger V. Morrison, PF, RRC, Deer Ridge Consulting, Inc.
Â
The spray polyurethane foam (SPF) community has been installing unvented-conditioned attic in homes for decades.  But with the changes in the International Residential Code, which were first implemented in the 2004 Supplement, the code now recognized the practice, [...]