Cellulose or blown-in fiberglass?
I have a 1939 house in northern NJ and am planning a re-siding project. While the siding is off I want to dense pack the walls with cellulose or John Manville fiberglass Spider insulation. Which is better?
Also, I was told to use Tyvek drain wrap as a WRB under 1 inch of foam board with siding over it. I plan on taping the seams on the drain wrap, but do I need to tape the seams on the 1 inch foam board? Is 1 inch extruded foam enough in NJ's climate zone?
Posted Nov 5, 2010 11:29 AM ET
Edited Nov 5, 2010 12:26 PM ET
Other Questions in Green building techniques