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 ?
The obvious area is below the ground floor where the timber floor joists could be touching bits of wall that are below the damp-proof course or maybe the sub-floor is very wet from a high water table in the ground.
Roofs, gutters, flashings, patios, gardens and in some instances damp-proof courses are all critical in determining the overall condition of our buildings.
The answer was to incorporate a damp-proof course in the floor but this would involve digging up and relaying the concrete.
There won't be a damp-proof course so your floor is always likely to suffer some damp unless you add your own physical damp barrier.
Older homes may have had a damp-proof course fitted to the walls but not beneath the floors, so joists can be vulnerable to moisture rising from the ground.
A new damp-proof course meant the sitting room had been freshly- plastered, the perfect surface for a fresco effect.
Just 40 years ago the majority of our homes didn't have a damp-proof course.
They called in the professionals to put in a damp-proof course, central heating and rewiring - and Phil took time off his work as a butcher to do the labouring.
Gill spent their first date captivating him with exciting stories about her new damp-proof course.
I AM sure that the damp-proofing companies won't agree with me, but it seems to us that pretty much all of the houses that were built without a damp-proof course now have a one fitted.
If your home doesn't have a damp-proof course, or it's defective, you'll need a specialist to install one, but it may be that the course is being prevented from doing its job.
A surveyor has even told Mrs Weir and the city council that the entire floor and damp-proof course needs fixing.