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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Sometimes the homeowner is overly keen on the garden and raises the soil adjacent to the house to above the damp-proof course, as high or even higher than the internal floor level.
Please remember it isn't either or, damp-proof course or plaster, it's both and don't try to save money by not doing the plasterwork.
The answer was to incorporate a damp-proof course in the floor but this would involve digging up and relaying the concrete.
A normal damp-proof course is fitted just above ground level and its sole purpose is to stop dampness rising out of the ground and into the building.
The idea is that any water soaking through the outer wall drains down into the foundations or is stopped by a damp-proof course, then channelled back out through the wall to the outside.
If in doubt, you should replace the damp-proof courses before you reset the window.
These precautions include slotting a damp-proof course into the junction between the two leaves of walling to provide an effective barrier which prevents the water soaking from the outside to the inside.