Energy Efficiency and Durability- Page 4 of 664
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Insulating basement in MN
Hello,We are trying to finish a room in our basement, and in the process insulate the basement wall in that room from inside (house built in the 50s, Zone 6). …
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Air handler in attic
I live in midwest zone 5. For the second floor of my 1925 house, I need 50K heating and 22K cooling. My house came with an air handler in the attic,…
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How to calculate slab heat loss with porches and stone veneer?
I'm trying to calculate room-by-room heat loss to size a new mini-split, and I understand that I have to factor in the loss of the exposed slab. The question is,…
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ISO Recommendation for slab edge insulation at walkout basement, zone 6B
New residential construction in climate zone 5B, has a detail with which I'm not familiar, hoping you guys can set me straight. The plan includes a walkout basement with a…
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Spray Foam In Select Locations
Hey everyone, I'm currently in the process of building in Vermont, zone 5B and am about to begin insulating. My plan is to only spray foam select locations of the…
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Any issue with using foil faced insulation tight against the interior side of a basement wall with 2” xps on the exterior of the foundation wall?
Hi—building a new home in climate zone 6a. The poured concrete basement walls were damped proofed with a liberal application of non-fibered tar coating, and then insulated with 2” xps…
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Flexible duct for mechanical ventilation contains vinyl?
For mechanical ventilation with dedicated ducting, it seems that in North America, NFPA fire safety rules have deterred the use of polyethylene duct like Zhender's Comfotube, in favor of fire-rated…
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Does blown in Cellulose add much R, or should I just go thicker on Exterior Insulation?
Considering possible value add of additionally blowing cellulose into stud cavities from outside before ext insulation application. Thoughts please? Situation: 1948 Ranch, 12ACH50 (!!), starting to plan deep…
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Basement Wall Insulation & Finishing
Hello,I've been reading around to try and gather information on basement insulation and wondering if the following would work...I have already installed and taped 1" xps and am planning on…
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Avoiding the ERV humidity/energy penalty when connecting to existing duct work
I haven't seen this explicitly stated elsewhere, but integrating an ERV supply into the return of existing ductwork also used by the AC has an energy penalty, and particularly a…