Daily Archives: December 12, 2014

Completed Crawlspace!

I finished the crawlspace today and replaced all the old pipe insulation with 1″ thick K-Flex R-7 insulation from Supply House. This insulation is a Greenguard certified product for its low VOC and mold resistance. There is over $275 of … Continue reading

Posted in Air Intrusion/Thermal Envelope, Construction, Energy Efficiency, Radon Mitigation | Comments Off on Completed Crawlspace!

Effective R Value?

Amory Lovins’ home boasts an “effective R-Value” of 40 for the masonry walls. I was skeptical knowing they were masonry with a 4″ polyurethane core. The core would be about 20 if it was XPS foam, less if EPS foam … Continue reading

Posted in Air Intrusion/Thermal Envelope, Construction, Green Building Interests | Comments Off on Effective R Value?