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CR Herro

Recent Posts

Existing Home Makeover: Energy Loss Through Glass

Posted by CR Herro

Sep 4, 2020 3:32:04 PM

The second in a series of building science articles on how to improve the performance of the 90 percent of existing buildings built before energy-efficiency strategies took root.

As home builders, we get the opportunity to “build it right” the first time, but many of us own older homes—or have friends and family with older homes. Here are some thoughts on how we can employ cost-effective and impactful enhancements to our current homes to make a difference. 

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Existing Home Makeover: Two-Zoned Attics

Posted by CR Herro

Aug 10, 2020 5:30:44 PM

The first in a series of building science articles on how to improve the performance of the 90 percent of existing buildings built before energy-efficiency strategies took root. 

As home builders, we get the opportunity to “build it right” the first time, but many of us own older homes—or have friends and family with older homes. Here are some thoughts on how we can employ cost-effective and impactful enhancements to our current homes to make a difference. 


When it comes to attic spaces, a top-chord insulated attic is the best choice in a warm climate because it optimizes energy efficiency compared to conventional vented attic assemblies, preventing excess hot shingle temperature in the summer as well as buoyant heat loss in the winter.

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