A New Encyclopedia Article on Water-Resistive Barriers
GBA Pro members have full access to dozens of informative articles in the GBA Encyclopedia
GBAGreenBuildingAdvisor.com's library of articles and blogs continues to expand. The newest article to be added to the ever-deeper GBA Encyclopedia covers water-resistive barriers (WRBs).
The article pulls together a great deal of information on WRBs, including:
- Code requirements for WRBs, including a curious requirement to use a roofing product on walls.
- A discussion of the differences between perforated and non-perforated housewraps.
- Information on housewrap-damaging chemical extractives that leach out of cedar siding.
- The scoop on liquid-applied WRBs.
- The advantages and disadvantages of Zip System sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen. .
- A caveat on Delta-Dry: the product isn't approved for use as a WRB.
Click here to see the new article on water-resistive barriers.
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While some of the articles in the Encyclopedia — for example, the article on Exterior Walls — are available to all readers, others (including the new article on Water-Resistive Barriers) are available only to GBA Pro members.