damp-proof

British  

verb

1. to protect against the incursion of damp by adding a dampcourse or by coating with a moisture-resistant preparation

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adjective

1. protected against damp or causing protection against damp

   a damp-proof course

Example Sentences

Sir Peter also says ministers may need to tighten building regulations to ensure that at-risk homes are properly protected - say, by raising plugs, fuse boxes and damp-proof courses.

From BBC • Oct. 10, 2016

The base of the cavity should be taken down a course or two below the level of the damp-proof course.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

To prevent the wet and frost getting into it, I painted the main front with a patent liquid material for rendering walls damp-proof.

From Cottage Building in Cob, Pisé, Chalk and Clay a Renaissance (2nd edition) by Williams-Ellis, Clough

A damp-proof course has been introduced consisting of a thin sheet of lead sandwiched between layers of asphalt.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

Also there were Bank of England notes, folded small that they might be pushed through the openings in the carved oak, and well-preserved, as the pocket had been carefully made damp-proof.

From Patty's Friends by Wells, Carolyn