damp course

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damp course

[¦damp ‚kȯrs]
(civil engineering)
A layer of impervious material placed horizontally in a wall to keep out water.

damp course, damp check, dampproof course

In masonry, an impervious horizontal layer of material (as tile, dense limestone, metal, etc.) to prevent the capillary entrance of moisture from the ground or a lower course, but used also below copings, above roof level in chimneys, and elsewhere to stop downward seepage.
References in periodicals archive ?
When we were doing the damp course, we were also able to add an extra few inches to the house space by digging the floor down because the original ceilings were very low.
TRADING standards officers are warning Wirr al residents to be on their guard if they are approached by companies claiming to do damp courses.
They were erected without damp courses and with joists made of seven inch by 21/1 inch battens split through.