10 Jul '11, 12pm

Can a DIYer install batt insulation to a Grade I level? #green

Martin Holladay's article, "Installing Insulation Right - It's Hard to do a Perfect Job" had me wondering if a DIYer could install fiberglass insulation "right". Assuming a DIYer were inclined to install it right, is there any reason why they couldn't install it to a Grade I level? http://www.greenbuildingadvisor.com/blogs/dept/musings/installing-fiberg... Also, in this same article is the following sentence: "To achieve the R-value shown on its label, a fiberglass batt must be installed perfectly in a wall or ceiling cavity enclosed by a six-sided air barrier." What exactly makes a wall cavity a "six sided air barrier"? Should each cavity have sealant at all twelve edges of the six sides? I'm remodeling and will be removing the drywall on most if not all of the exterior walls. Now would be the time to seal the four edges where the exterior sheathing meets the 2x4s and the...

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

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