Articles Search Results
Keywords:
article_keywords:(conditioned attics, attic assembly, vapor retarders, conditioned space, roof sheathing, fiberglass batt insulation, condensing surface, vapor retarder) article_title:(conditioned attics, attic assembly, vapor retarders, conditioned space, roof sheathing, fiberglass batt insulation, condensing surface, vapor retarder)^4
Problem: Providing adequate attic ventilation has been a requirement in building codes for several years. The standard ratio for ventilating an attic assembly is 1 to 150 of the area of the space to...
Moisture-laden air can damage insulation and framing members, but a continuous vapor barrier helps prevent this from happening.
Ordinary paint as a replacement for poly vapor retarder (52 KB)
New research evidence and field experience are leading to the conclusion that even in very cold regions, polyethylene vapor retarders are probably overkill and that ordinary paint should provide adequ...
Adequate attic ventilation is a long-standing requirement in building codes. However, conditioned, unvented attics reduce residential energy needs, and under certain conditions sealed attics are allo...
Replacing crawl space vents with an exhaust fan and drawing house air in to condition the crawl space reduces moisture problems and can increase energy efficiency.
Ceiling and attic insulation and ventilation (135 KB)Insulating ceilings is one of the most cost effective energy efficiency measures.
Attic Access (114 KB)A home's attic access, such as an attic hatch, pulldown stairs, or knee-wall door, often goes uninsulated and unsealed, creating one of the biggest holes in the thermal and air barrier between the att...
Rigid board insulation (foam plastic) is an effective draft stop and also increases the R-value of the attic kneewall if installed on the attic side of the kneewall, replacing the need for separate dr...
Ceilings and Attics (144 kb)Insulating ceilings is one of the most cost-effective energy efficiency measures.
Most building codes require roof vents to expel moisture that could cause insulation or other building materials to deteriorate during winter.