Our nation’s fixation on R-value for our insulation is ridiculous. Large scale testing has proven that an air barrier is far more effective than any R number. Take this one experiment- where a duplex had half the attic insulated with R-20 Foam and the other half with R-30 batts. When the snow came, the roof [...]
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We often get questions like, “Do I really want to seal out all the air in my walls?” and “Can my home be too airtight?” Our answer is that you should bring in good quality air from known sources instead of questionable air quality from unknown sources. When you think of fresh air, you don’t [...]
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Normally when something doesn’t hold water, it is implied that it’s “full of holes” and therefore, not worthwhile. But, when it comes to insulation, that’s exactly what you want- something that won’t hold water in your walls. Fiberglass, celulose, and Icynene all hold water. Foam It Green closed cell polyurethane spray foam does not hold [...]
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