Building Science

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The Path to Zero-Carbon Homes Leads to Profit

Sam Rashkin says that builders now have the tools they need to design and build... More

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Where Should the Air Barrier Be Located?

Because walls and roofs are three-dimensional, the air barrier could go inside,... More

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How to Size an HRV or ERV

Unlike a furnace or air conditioner, oversizing one of these can be a good thing. More

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The Trouble With Attic Kneewalls

When a change of ceiling height or tray ceiling creates a short attic kneewall,... More

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Getting Basements Right

Joe Lstiburek offers a definitive resource on keeping basements warm and dry. More

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Why the Quality of Attic Insulation Installation Matters

To make sure the R-value of sprayed or blown attic insulation meets expectations,... 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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Controlling Humidity in a Spray-foamed Attic

Is installing a small bath fan in a conditioned attic an effective strategy for... More

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A Builder's Guide to Breathable Indoor Air

The formula for cleaner, healthier indoor air is simple: A tight shell, and... More

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Moisture Detection Tools

Bill Robinson unpacks the Pelican case full of tools he uses to inspect for... More

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