damp course(redirected from damp-proof courses)
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damp course[¦damp ‚kȯrs]
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.