Energy Efficiency and Durability- Page 2 of 663
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Insulating parallel chord rafters
We are building a PGH in climate zone 6. The 13:12 cathedral roof is composed of a metal roof, ice and water shield, 1 1/2" vented cavity, 16" parallel chord…
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Unvented Attic with Trusses (New Build)
I’m trying to figure out the best way to do my attic insulation. I’m in northern Alabama, climate zone 3a. I want an unvented attic because my HVAC air handler…
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Multi split ?
Hi, I have a 1500 sq ft house in zone 4 ( close to DC). I currently have a gas furnace and AC which is a downdraft and my ductwork…
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Why are CMUs ( Concrete masonry unit, aka block wall ) bad for basments?
I see lots of references as to ICF being superior to CMU basements, but not a lot on *why* that is so. My potential builder is much more familiar with…
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Enclose existing patio
Hello. I have a 16’x28’ patio that I want to enclose as part of house remodel to make more living space. The existing patio is an 8” thick, 5,000 psi…
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Contractor won’t spray foam upper attic because I don’t have house wrap?
I was getting settled on having a contractor extend the vent baffles in my upper attic to the ridge vent and then apply OC foam w/ vapor barrier spray. This…
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European superiority skylight edition!
If you've shopped around for the most efficient skylights in North America, you'll find two things.1.) the U-factors are much higher than windows with an equivalent glazing type (double pane,…
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Backup heat source, not wood
About to build a single story over a basement house in zone 5a in western North Carolina. All electric. I was considering a wood stove for heat/cooking in the event…
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Efficiency of Radiant ceiling panels vs in-floor hydronic heating
Hi all, I'm hoping for a discussion on the relative efficiency of delivering heat using hydronic radiant ceiling panels vs in-slab hydronic, cost aside. That is, assuming the same BTU…
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Distribution Efficiency in upper Midwest basement
I am an energy auditor in the upper Midwest, and I am trying to figure out how to accurately account for the benefits of duct sealing in what is very…