cavity wall

American  

noun

Masonry.

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

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cavity wall British  

noun

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

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Etymology

Origin of cavity wall

First recorded in 1905–10

Example Sentences

British Gas, the original installers of the cavity wall insulation, said it had "nothing further to add to Osborne Energy's position".

From BBC • Nov. 3, 2025

Blaan Paterson is in dispute with his local council over his claim that cavity wall insulation has led to nearly a decade of damp conditions.

From BBC • May 10, 2023

Tom Woolley, a semi-retired professor of architecture, has been highlighting "cavity wall insulation disasters" for a number of years.

From BBC • May 10, 2023

There is also a range of grants available to help pay for things such as double-glazing and cavity wall insulation.

From BBC • Feb. 26, 2022

The lateral portions of the ethmoid bone are located between the orbit and upper nasal cavity, and thus form the lateral nasal cavity wall and a portion of the medial orbit wall.

From Textbooks • Jun. 19, 2013