cavity wall

noun

Masonry.

1. a wall built with an enclosed inner space to prevent penetration by water.

cavity wall

noun

1. a wall that consists of two separate walls, joined by wall-ties, with an airspace between them

Word History and Origins

Origin of cavity wall¹

First recorded in 1905–10

Example Sentences

The council said people could get advice on schemes available to help with heating costs ahead of autumn and winter, while eligible households can also get help with loft and cavity wall insulation.

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Exactly the same kind of beads that are sometimes used to insulate cavity walls in buildings, he explains.

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Changes to the rules mean homes are no longer required to have existing loft or cavity wall insulation, which could save around £2,500 of upfront costs.

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Costs and savings vary considerably, but a typical installation of cavity wall insulation in a mid-terrace house would cost about £390, with annual energy savings of £95.

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Millions of pounds were spent by local authorities "retrofitting" older homes with cavity wall insulation.

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