Cavity walls

Cavity walls

A wall comprising two layers of brick or block separated by a cavity (gap). This air space acts as an insulator, but does so more effectively if filled with an insulating material, such as plastic foam or natural materials like wool or recycled newspaper.

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Part of Speech: noun
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Industry/Domain: Natural environment
Category: Climate change
Company: BBC
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cavity wall

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An exterior wall, usually of masonry, consisting of an outer and inner withe separated by a continuous air space, but connected together by wire or sheet-metal ties. The dead air ...

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