Energy Efficiency and Durability- Page 5 of 686
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Attic Insulation
My vented attic is decked but uninsulated. I want to install 8" of Owens Corning 2" x 4' x 8' styrofoam sheets x 4 on the attic deck. Is there…
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In a flash & batt roof, should the foam encapsulate the rafters?
In a flash & batt approach to a flat roof deck or unventilated attic, should the closed cell foam encapsulate the rafters?This is for an inhabited attic, with a sloped…
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Rigid Insulation Under Rat Slab
Hello,This is for Zone 4C regarding a crawl space detail, please see attached. I had looked at several details on this site regarding crawl spaces and someone brought up insulating…
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Unvented Low-Slope Roof Assembly Insulation Gap
Hello,I'm trying to work through the details of an unvented roof assembly in climate zone 4C (Seattle). Please see that attached detail. This roof will be over a new addition…
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Basement ventilation
I would say I have a basement with 80% of walls insulated. There is a water heater heat pump, a sump pump, access to the crawl space which I think…
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Can you stack foil faced polyiso?
Well my insulation plans have changed as I recently have access to a good amount of "recycled" polyiso 4x8x2 foil faced foam boards (both sides) that read r13. Also a…
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Can you run HVAC fan continuously for better air circulation?
Hello everyone, we've recently done a bunch of HVAC work to address air quality and humidity concerns. We installed a Santa Fe ventilating dehu which is controlled by a Haven…
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Will interior (polycarbonate or vinyl plastic) storm frames significantly improve U- .30 windows?
I read on a separate thread a discussion of the difference between U-factor .30 and .20 windows (conclusion was that .30 was usually sufficient given the cost -- .20 means…
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Insulating with Prodex & Fiberglass
Anyone familiar with using Prodex products to insulate a North Texas home (16x52 cabin) in combination with fiberglass insulation? 2x4 walls with layer of sheathing and smart siding (prebuilt cabin -…
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How to insulate an attic
Hi,I am looking for insulation advice on our new build in south Texas. It is a one story 3,000 sqft home. The goal is to minimize spray foam and use…