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This article is based on questions regarding Building Envelopes asked during the May REScheck Webcast as well as questions received through email.
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...
You can think of the building envelope as the boundary separating the inside from the outside and through which heat is transferred.
The Building Envelopes Program at Oak Ridge National Laboratory (ORNL) is a program within the Buildings Technology Center (BTC), the premier U.S. research facility devoted to developing technologies ...
Value Engineered Framing (132 KB)An effective building envelope is a key element for The size and location of doors and windows has an an energy-efficient home. Value-engineered framing impact on the thermal efficiency of the buildin...
AEDG for Small Office Buildings - Opaque Envelope Components (177 KB)Opaque Envelope Components section of the ASHRAE Advanced Energy Design Guides (AEDG) for Small Office Buildings.
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.
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...
Requirements for the building envelope fall under Chapter 5, Section 502. Compliance to ASHRAE 90.1-2004, Section 5, is also acceptable by reference in the energy code.