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University of Florida researchers are shedding new light on the strength benefits (and moisture risks) of closed-cell spray-foam applied to the underside of roof sheathing.
Working around existing attic insulation to seal air leaks may be more cost-effective than removing and replacing it
Instead of excavating to below the frostline, insulate below the edge of the slab and out from the building
Chris Corson is working on another Passive House — this time, with a more ample budget, and a more complex design.
Several open-cell foams have been approved for the ICC-ES for use without an ignition barrier in sealed attics and crawl spaces.
Prescriptive ignition barriers aren’t the only route to compliance. Spray foam can also be protected with an intumescent coating.
Excluding heat and humidity saves energy, improves comfort, and increases durability
When framing is buried beneath loose-fill cellulose, move slowly and carefully, and fill in any excavated areas
This economical material both air-seals and insulates
Innovative open-web trusses allow for easy assembly, high R-values, and minimal thermal bridging
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