General Questions- Page 59 of 1409
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Adding 2″ of rigid foam to exterior. What to do about rake boards?
Hi, I plan to re-side my house and add 2" of rigid foam insulation under the new siding. This will create some issues with the windows and doors, which can…
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How important is staggering seams with exterior insulation?
Hi all, looking to install 2" polyiso nailbase for cathedral ceiling condensation control in climate zone 3. I would imagine that a single layer of foam will never have perfect seams…
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Studies on IAQ of balanced ventilation vs no ventilation?
Someone in the industry recently challenged my assertion that having a properly designed and installed ERV was obviously better for indoor air quality than simply opening a window, and asked…
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ERV recommendation for replacement
Hi,I have a new all electric two story house with slab on grade built to the passive house standard but not certified. The pre-drywall blower door test came back with…
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1970s remodel with fiberboard sheathing, how to upgrade with polyiso
Hi--I got a weird remodel and looking for advice. I have 1976 ranch in the puget sound area, IECC 4C and it has fiberboard sheathing with ply in the corners…
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Manifold Placement for In-Floor Radiant Heat in Multi-Story House
I am attempting my first in-floor radiant heating setup in a multi-story house and I am having trouble finding information on where to put the manifolds. There are three floors,…
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Attic mold encapsulation before ccSPF?
Long time lurker, first time poster. I'm in zone 5A, outside of Boston. We're renovating the (unvented) top level of my 1920s bungalow. (The town assessed it as a 1.5…
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cold climate air to water heat pump auxiliary heat & AC
We are in the detail design phase of a 3 bedroom lake cottage outside of Rangeley, ME climate zone 6. Plans attached. It will be a vacation home for us…
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Spray Foam and Fire Retardants
Spray foam has come a long way...major manufacturers are now offering Greengaurd Gold certified ultra low VOC products and using blowing agents with a much lower GWP than before. But…
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Faswell Crawlspace
Hi there. I recently purchased the shell of a timber-framed cabin on the Olympic Peninsula in Washington State. I am trying to sort out the crawlspace. From what I've read…