27 Aug '14, 4pm

Repeated cycles of wetting and drying make OSB more vapor-permeable.

Repeated cycles of wetting and drying make OSB more vapor-permeable.

Oriented strand board (OSB) gets blamed for a lot of problems that are really the fault of the designers and builders. Part of the problem, of course, is the perrenial confusion between correlation and causality. OSB hit the market as we really started getting serious about insulation and air sealing. As I described in the story of painters refusing to paint insulated homes , building assemblies that keep the exterior sheathing Material, 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. and cladding Materials used on the roof and walls to enclose a house, providing protection against weather. colder restrict its ability to dry. Is that the fault of the OSB? Or the insulation? Or the lack ...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/building-s...

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11 Things I Wish More Pastors Would Say

rachelheldevans.com 27 Aug '14, 10pm

I’m blessed to have had several such pastors in my life, though I realize such humility isn’t a given. The irony, of cours...