Building Science

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Major Surgery for a Failing Fat Wall

The worst decades for building science weren’t in the 1800s; they were late 1970s... More

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Monitoring Home Performance

Certain home performance problems are hard to catch because you may not be at the... More

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Avoiding Wet Roofs

The building science behind common moisture problems in attics and roofs, and a... More

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Retrofit Air-sealing

Phil Armand describes the tools, materials, and methods he uses to air-seal leaky... More

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Why and How to Build an Insulated Overroof

Avoiding the risk of condensation in a modern low-slope roof design that doesn't... More

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A Troubled Tiny House

Building a small wooden structure on a steel trailer without considering climate... More

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Building Science Instruction

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Single-Point vs. Multi-point Blower Door Testing

Randy Williams explains the difference in these two types of tests, and when it's... More

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Calculating House Volume for Blower Door Tests

The only way to accurately measure air changes per hour is to accurately measure... More

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Setting Up a Home for a Blower Door Test

Blower door testing a home requires much more than simply setting up the equipment... More

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