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Cold-Weather Performance of Polyisocyanurate
Researchers are beginning to understand the causes of the problem, but solutions remain elusive
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Hygrothermal Software Sometimes Yields False Results
Unless ASHRAE Standard 160 is fixed, WUFI software will continue to provide undependable predictions
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Can Unvented Roof Assemblies Be Insulated With Fiberglass?
Owens Corning is promoting an insulation method that has long been considered risky
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Nuggets From the 2015 Westford Symposium
New perspectives on ventilating multifamily buildings, insulating old brick buildings, and achieving thermal comfort
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Exterior Rigid Foam on Double-Stud Walls Is a No-No
This type of wall needs to dry to the exterior, so in most cases it shouldn’t have any exterior rigid foam
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Liquid-Applied Flashing
For many locations, including window rough openings, liquid-applied products are simpler and more dependable than peel-and-stick
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Misconceptions About HRVs and ERVs
A heat-recovery ventilator isn’t a space heating appliance, makeup air unit, dehumidifier, or energy-saving device
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Saving Energy With an Evaporative Cooler
In a dry climate, lowering the temperature of your indoor air with a swamp cooler uses much less electricity than an air conditioner
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Installing Windows In a Foam-Sheathed Wall
Advice on fastening and flashing details for both innie windows and outie windows
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GBA Prime Sneak Peek: Is Weatherization Cost-Effective?
A recent study claims that weatherization measures cost more than they’re worth — but the study’s analysis is flawed