Thermal Envelope Design in Home Building (Explained)

Weathertight, thermal insulation, and airtight are the three continuous functional layers in thermal envelope design in home building to provide adequate protection from the elements.

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These layers’ performance must be tested on paper and in the field. Once these layers are installed, gaining access to correct any remaining flaws is prohibitively expensive.

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What Is a Home’s Thermal Envelope?

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Airtightness Layer

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Test the Air Control Layer With a Blower Door

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Insulation Control Layer

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