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DADO
RAIL |
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Wooden moulding fixed horizontally
to a wall, about 1 metre (3ft 4in) above the
floor, originally intended to protect the wall
against damage by chair-backs. |
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DAMP-PROOF
COURSE |
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Layer of impervious material (mineral
felt, pvc etc.) incorporated into a wall to prevent
dampness rising up the wall or lateral dampness
around windows, doors etc.. Various proprietary
methods are available for damp-proofing existing
walls including "electro-osmosis" and
chemical injection. |
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DEATHWATCH
BEETLE |
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(Xestobium Rufovillosum.) Serious
insect pest in structural timbers, usually affects
old hardwoods with fungal decay already present. |
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DOUBLE
GLAZING |
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A method of thermal insulation usually either:
Sealed unit : Two panes of glass fixed
and hermetically sealed together; or
Secondary : In effect a second "window" placed
inside the original window. |
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DRY ROT |
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(Serpula Lacrymans.) A fungus which attacks
structural and joinery timbers, often with devastating
results. Can flourish in moist, unventilated
areas. |
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EAVES |
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The overhanging edge of a roof. |
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EFFLORESCENCE |
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Salts crystallized on the surface of a wall
as a result of moisture evaporation. |
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ENGINEERING
BRICK |
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Particularly strong and dense type of brick,
sometimes used as a damp-proof course. |
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