General Questions- Page 176 of 1411
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Vermiculite discovered under fiberglass after cellulose installed
Our 1887 house was used for a blower door inspection as part of a building class in 2009. The attic had apparent fiberglass bats on the floor. In 2013 we…
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Visqueen as Flooring Underlayment
Hello All,This is my first attempt at asking a question on the forum, as I'm a new member last month. My wife and I live in Southern California, climate zone…
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No clear sign of mold after 33 years, so okay to again use batt and vapor barrier in basement? Batts started 2′ above floor. Can I batt all the way down?
I would do spray foam, but I can't get an installer for 3 weeks, and tenant can't wait. Brick wall, no significant signs of water issues. I know polyethylene vapor barriers…
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Join a continuously insulated wall with a regularly insulated wall? (Dew point effects?)
I’m in the Seattle, WA area and currently underway on an addition to our 1910 home. We’re not allowed by code to add exterior (“continuous”) insulation to much of the…
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Rigid foam for roof, does backing material matter?
Hello,We're building a home with a unvented attic space, r-38 open-cell sprayed at the roof deck, metal roof. We have supply ducts going into the attic space to condition it. The…
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Wall Assembly for Cedar Shingle Siding
What's the "Good Enough" wall assembly under cedar shingles? I'm doing a major addition to our smallish house in the DC area of Maryland (Climate Zone 4). We are using…
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Thinnest interior insulation with high R value
Due to some unforeseen changes, need to add interior insulation to the foundation wall that is now an above ground wall. (1x3 feet). Elsewhere using Rockwool, but there are no…
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Florida Hot/Humid – R-Value on drawing vs Contractor
New construction insulation at roof and floor deck.Building located in Florida – Climate Zone 2 > waterfront, raised building. I need to find a middle ground for what was on the…
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We Need More Research on how CO2 Affects Cognition- Article from “Construction Physics”
www.construction-physics.com/p/we-need-more-research-on-how-co2?utm_campaign=post&utm_medium=webI recommend this article from the newsletter "construction physics". It's a good summary of the state of research on CO2 effects, we talk a lot about the effects of much…
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Matt Risinger Rookie Builder Mistakes
This is an excellent video focusing on the common mistakes Matt sees builders make with regard to wall penetrations and his recommended products that do a much better job.https://www.youtube.com/watch?v=viiDjQbALxU&t=22s