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

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.

From BBC

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.

From BBC

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

From BBC

The scheme will run from spring 2023 for up to three years, and will focus on low-cost measures such as loft and cavity wall insulation.

From BBC

The problem was believed to have happened after workers who replaced the fans damaged the cavity wall, causing the common insulation material to leak out.

From BBC