Sealing potential leaks in the building envelope is an essential step in building a durable, energy-efficient structure. It’s easy to focus on insulation, but without careful air-sealing, insulation is all but useless.
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Tape is best, but the right caulk can also provide a tough, reliable seal More
To cost-effectively meet air-sealing requirements for new construction, some leaks... More
Though it's impossible to seal every hole in an existing building to prevent air... More
Excluding heat and humidity saves energy, improves comfort, and increases durability More
Phil Armand describes the tools, materials, and methods he uses to air-seal leaky... More
Chris West troubleshoots an ice damming problem in a Cape-style home, a common... More
Bad things can happen if complex roofing, ganged framing, and marriage walls... More
Make sure the wall is well-pointed, then apply your choice of material on the... More
Focus on a building's high and low points, and where one material or part of an... More
Here's the right way to air-seal and insulate an existing double-wall metal chimney. More
Here’s a new resource for high-performance building and design professionals. More
