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Airtight drywall is an all encompassing term that includes air sealing according to the Thermal Bypass Checklist, the Thermal Enclosure Checklist, and Energy Trust of Oregon's air sealing checklist. The theoretical limit for the airtight drywall approach to air sealing is about 1.5 ACH50.

The results are and in and the City of Bend ranked 19th out of 49 communities participating in the Georgetown University Energy Prize.

A regular series of timely insights from Earth Advantage

Every house has the potential for micro-climates. Learn how to combat moisture in a micro-climate.

Our 2017 statistics and important information on the Energy Trust of Oregon® New Homes program

A new development in Ashland pushes the envelope on sustainability.

Important information for all Earth Advantage builders

Focusing on upgrading a building's shell is usually a more cost-effective way to improve a home's energy efficiency.

Earth Advantage inspects all areas of the thermal envelope to confirm the quality of the insulation installation. This is one of the first items on the Thermal Enclosure Checklist (TEC), which is required for all homes pursuing Earth Advantage Certification.

Earth Advantage introduced the nation's first high performance homes appraisal addendum to value the unique attributes of energy efficient and sustainable homes in 2011, with the support of Energy Trust of Oregon.  We've recently updated and improved this appraisal addendum, which is attached here and available for anyone to use.