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Got Walls? Building America Want to Test Them for Moisture

Posted by GBM Research

Mar 11, 2016 11:48:26 AM

Researchers are looking for builders using high-R wall systems for test models.

The focus of the study is on wall systems with R-value of 20 and higher in airtight, high performance homes located in climate zone 4 or higher. The result of this study will provide valuable real-life data on long term performance of wall constructed using energy efficiency practices.

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Infographic: Europe Leaves the U.S. Far Behind in Race to Reduce Energy Waste

Posted by GBM Research

Oct 23, 2015 12:00:00 PM

The data show that Europe—especially Germany—has blown the doors off the U.S., in terms of energy efficiency.

In a comparison of household energy use, Germany ranks first, followed by Italy and the EU. The U.S. lags behind, at 13th, tied with Mexico.

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Toward Integration of Building Science

Posted by GBM Research

Aug 26, 2014 7:48:00 PM

OVER THE YEARS, the Department of Energy’s Building America (BA) program has filled a critical gap by funding research on innovations for high-performing homes, both new and existing. But the biggest obstacles to advancing building science are not technological, says Sam Rashkin, the DOE’s chief architect of the Building Technologies Office. The larger hurdle is market adoption, which has several facets, including an inadequate number of skilled professionals. After all, this critical research doesn’t do any good if only a select few people know how to access and implement it.

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Advanced Framing Best Practices for a Tighter Thermal Envelope

Posted by GBM Research

Aug 26, 2014 7:36:00 PM

ADVANCED FRAMING TECHNIQUES that reduce the amount of framing in stud-framed walls improve their thermal performance. There’s more room for insulation, and thermal bridging—the heat transfer that happens through wood framing and extends from the inside surface to the outside surface of the wall—is reduced.

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Retrofitting Rooftops: The Overcoat Method

Posted by GBM Research

Aug 22, 2014 4:19:00 PM

NORTHERNSTAR BUILDING AMERICA Partnership has been investigating the use of an external insulation retrofit approach for existing houses under the “Project Overcoat” label. The overall design intent is to put thermal, air and moisture control layers over the exterior of an existing building, including the foundation, wall and rooftops. The approach uses a peel-and-stick membrane for an air barrier and layers of rigid foam for a thermal barrier to provide exceptional thermal and air barrier alignment and continuity in older homes with simple geometries. NorthernSTAR found the approach worked well for roof retrofits in 1-1/2-story homes, which are difficult to insulate under the roof due to lack of space, and often have serious air leakage problems that can lead to ice dams.

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