Insulation & Air Sealing

Jul 6 2015

Rigid foam board, adhesive, and canned foam give an airtight cavity that can be insulated well.

Jun 29 2015

Some do's, don'ts, tips, and tricks on how to deal with obstructions in wall cavities


Jun 23 2015

How a blower door works, how to set it up, how to use it to find air leaks in a home's envelope, and how to break down the numbers.

Jun 11 2015

When talking to homeowners or trade contractors about energy efficient construction this question is inevitable. The answer: Tight houses are good because they lower energy bills and increase comfort. But there's a big BUT

Jun 3 2015

This house is superinsulated with airtight construction methods. I was delighted at the opportunity to look inside the walls, but depressed at the reason why.

May 30 2015

Batt insulation is by far the easiest insulation to install — poorly. This intro tells the basics of installing it right.

May 12 2015

It's easy to air seal the middle of the wall where there are no gaps, cracks, or joints. The edges are a different story, especially when one edge is wood and the other is concrete.

May 1 2015

If drywall were clear, we could watch walls get wet daily. Moisture rides on air ...

Apr 20 2015

Regular walls just won't cut it anymore. Higher-achieving energy codes mean higher-performance walls, airtightness targets, and home energy rating system (HERS) scores. Here are six improvement targets to shoot for.

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