Expert Exchange Q&A- Page 2 of 14
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Cathedral Ceiling Insulation
I have a home built in 1978 that uses 2x12 rafters. There are fiberglass batts between the rafters, it looks like two 6" paper faced bats with one paper face…
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Mitsubishi Mini split
We recently installed mini splits, which will eventually be run by a solar system. In the night, the electric went off, then came back on again, but the mini splits…
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Piecewise Insulation and Moisture-Mitigation Planning
We are currently tackling a renovation project for a 1910 three-wythe brick home with embedded joists in Climate Zone 4A. Unfortunately, our small bathroom renovation revealed mold issues when the…
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Frost protected shallow crawl space foundation?
Hi all, we are in the planning stages of an 1100 sq ft addition to our 1967 four season cottage in South East Ontario Canada (zone 5b) and are considering…
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Slate Roof Creating Conditioned Attic Space
Hello! Alan here. I have read many postings online and many link to this site. I have a 1930 colonial with slate roofing. The attic area is vented with lower…
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Customizing NRCAN’s Energy Rating formula for south-facing windows with deciduous trees blocking summer sun
The formula is: ER=(57.76×SHGC)−(21.90×U)−(1.97×L75)+40Since most expense in Canada is for heating not cooling, the formula already gives more weight to the SHGC, but still it assumes many/most users have nothing…
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Highest SHGC sliding door in Canada is 0.63. Why not higher?
NRCan's downloadable data for all sliding glass doors has 21400 rows, apparently one row per door option. The highest SHGC is 0.63. Only 4 doors are higher than 0.6. Why are…