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Weather-Stripping Windows with V-Strip
An in-depth window study on six homes compares the effectiveness of plastic vs. metal weatherstripping.
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A Recessed Can of Worms
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As weatherization consultants and trainers, we see many kinds of problems in different homes. A few years ago, we received a call to solve an unusually high bill complaint. ... [continue reading]

Frozen Pipes Dilemmas: The Hard Cold Facts of Insulation Effectiveness and Building Tightness
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When the air temperature inside the heated space is cold enough to freeze plumbing, clearly there's a problem. [continue reading]

An Insulation Roundup
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In the confusing world of insulation materials, telling the difference between fraudulent claims and the real thing is not easy. [continue reading]

Cheating - The Insulation Industry's Dirty Secret
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Major problems exist with the way some attic insulations are manufactured, labeled, and installed. An experienced insulation contractor, diagnostic technician, and building science educator sizes up the ongoing problem of cheating and offers specific recommendations to prevent it. [continue reading]

Reexaming Roof Ventilation
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A new business opportunity is being created in cold-climate areas, as roofers work with home performance contractors to address issues of liability, technical rethinking, and customer service. [continue reading]

Radiant Barriers: Performance Revealed
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In the summertime, radiant barriers give attic insulation a clear advantage in cutting the demand for cooling energy. [continue reading]



Scott Donnelly
GreenExpo365 Host
Keeping a home cool in the summer yet warm in the winter is a tough request. The choice of quantity ...


Doug Garrett
Code Conflict Between 2012 IRC and 2012 IECC
It has come to my attention that there may be a building science-based conflict in the language of the 2012 International ...





























