Monolithic Slab w/ 4-in. Rigid Foam

Insulated Crawl Space for Cold Climate. Concrete Block with Exterior Rigid Foam (4 in.)

Insulated Basement. Poured Concrete with 4-in. Interior Rigid Foam (Framed Wall)

A Cold-Climate Design Competition

The University of Alaska Fairbanks and its housing research partner address the challenges of cold-weather green building

Things I Learned in the Great White North

Or, damn, it’s cold in Minnesota

Can Exterior Foam Insulation Cause Mold and Moisture Problems?

A thick layer of rigid foam insulation amounts to a vapor barrier on the outside of a house. Won't this trap moisture and rot the OSB?

From ‘Tea House’ to Tight House

By Doug Snyder In 2008, contractor Dwight Holmes went to work with homeowner Mary Sargent on a deep energy retrofit of her 1917 “Tea House.” Nestled into a hillside apple…