PERSIST
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Foam Shrinks, and Other Lessons
What we learned from updating a 16-year-old deep-energy retrofit
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Wrapping an Older House with Rock Wool Insulation
The designer of a deep energy retrofit project in Massachusetts specified 6 inches of mineral wool insulation for the exterior side of the walls
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A Real Chainsaw Retrofit
Builders in Maine pull the cord on a Stihl chainsaw and cut off some roof overhangs
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Service Cavities for Wiring and Plumbing
Designers of superinsulated houses are developing new ways to disentangle utility runs from insulated wall and ceiling assemblies
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Can Polyethylene Be Used as an Air Barrier?
A material that's fallen out of favor might still have a legitimate use
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Is There Such a Thing as a Perfect Building Envelope?
The insulation method proposed by this GBA reader requires a lot of foam
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Can Exterior Foam Insulation Cause Mold and Moisture Problems?
A thick layer of rigid foam insulation amounts to a vapor barrier on the outside of a house. Won't this trap moisture and rot the OSB?
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Architects Talking About Air Barriers
Two Maine architects discuss several ways to create a good air barrier
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Getting Insulation Out of Your Walls and Ceilings
The PERSIST technique puts insulation where it belongs
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‘Innie’ Windows or ‘Outie’ Windows?
When walls have exterior foam, where do the windows go?
