Questions
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ERV vs HRV decision using historical data on psychrometric chart
I'm trying to finalize the decision between an ERV and HRV for my home. Would appreciate feedback on the approach below which I haven't seen used before.I found software called…
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Minimum separation between two air intakes (ERV and makeup air)
I've done some searching but haven't found any details on required minimum separation of two air intakes, one for a continuously running ERV (~100-120 CFM) and the second for a…
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IRC Code Question: How to Determine Code Requirements Beyond Published Charts?
Greetings everyone, Chapter 4 of the IRC details the foundation size requirements for residential buildings with various wall types, soil types and roof loads. Table R403.1(3) appears to be the…
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Any value adding extra insulation to unvented flat roof?
Hello GBA. We have a small section of unvented flat roof in our project and I am wondering if there is value in adding extra insulation inside because we have…
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Superior Walls Experiences?
Hello all, I'm looking for some feedback on Superior Walls if anyone has used them? We've finally gotten a few foundation quotes and Superior Walls has come in cheapest by…
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Looking for induction range recommendations
My wife and I hope to purchase an induction range -- that is, a 30-inch-wide appliance that sits on the kitchen floor and includes an oven under the cooktop. I'd…
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Retrofitting CMU with perlite core fill insulation
I have a 1953 Cape Cod, climate zone 4a. The first floor is uninsulated CMU with stucco exterior and 3/4" furring strips plus drywall interior. The attic has ~3" fiberglass…
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Blocking airflow in commercial flex duct
Hello, I maintain a commercial hair studio that the tenants are often affected by hot air flow through the diffuser so I stuffed the duct with Roxul safe and sound to…
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Speculative Q: Passive solar heated (outdoor) space as air source for heat pump?
This is a very speculative question, so thanks for humoring it -- for air source heat pumps which use outdoor air, would there be any advantage to enclosing the intake…
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Is water trapped between slab’s Radon barrier and XPS insulation an issue?
Hello All,We are working on our slab-on-grade foundation. We received quite a bit of rain and are projected to get more in the coming days.We have the radon barrier (StegoHome)…