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do I damp proof my basement or cellar?
are several possible ways of cellar damp proofing / tanking
your cellar or basement and it is difficult to suggest
the best way without actually seeing the cellar. Below
are some suggestions that would be suitable in most cases.
Paint the floor with 3 or 4 coats of a water based rubberised
bitumen emulsion. Then put sand/cement screed on top
(approx. thickness 50 mm). If the original floor is brick
or flagstones, it would first be necessary to repair
any decayed mortar joints.
Alternatively put down a layer of sand then cover this
with a layer of polyethylene damp proof membrane which
is a plastic sheet obtainable from Delta Membranes. The
sheet must be lapped up the walls and can be secured
using flashing tape. Any joints in the plastic sheet
should be made by holding approx. 10 cm of each piece
of plastic together then folding them so that one of
the pieces goes back on itself and the other lies on
top. Then cover the plastic sheet with sand/cement screed