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APA Wood Explains Benefits of Energy Trusses in New Report
Energy codes for the building industry have evolved over the years, resulting in the demand for greater efficiency in homes. By increasing ceiling insulation, builders are able to meet this growing need. Energy trusses, also known as raised-heel trusses, are one solution that’s proved to be helpful. APA, the Engineered Wood Association, recently released a system report on the subject.
With traditional rafters or roof trusses, the depth of attic insulation is usually reduced above the wall top plates due to the narrow amount of space between the top plates and the roof sheathing. To comply with International Energy Conservation Code (IECC), trusses are more commonly being constructed as energy-heel or raised-heel trusses to provide adequate space for full insulation without compromising the effectiveness of attic ventilation.
In order for builders to utilize this method, a structure must meet a number of conditions including the following:
- The building must be designed in accordance with 2012 or 2009 IRC
- Trusses must be raised-heel trusses with a depth between 15-1/4 and 24 inches
- Top-story stud wall height must be 9 feet or less
Download the full report from APA Wood here.
Also, for more information, read our recent article on energy trusses here.
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