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Allison Bailes

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Insulation & Air Sealing

How Much Heat Really Leaks Out of the Attic Hatch of an Insulated Ceiling?

Dr. Bailes does the math
Jan. 30, 2024
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Insulation & Air Sealing

Lumpy Spray Foam Doesn't Average into a Good Job

The @EnergyVanguard investigates an attic insulation job in Charleston, SC. #TheBadNews: from zero to nine inches thick in one roof. #BadDogNoBiscuit.
June 7, 2019
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HVAC & Mechanicals

Dew Point: 7 Minutes of BS (#BuildingScience)

Dew point differs from relative humidity in that it measures exactly how much vapor is present. With relative humidity, it's all relative.
March 22, 2019
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HVAC & Mechanicals

How to Clean the Condensate Line for an Air Conditioner

Another use for your Shop-Vac
June 28, 2018