Building Defects Caused Due To Dampness
Building Defects Caused Due To Dampness
Building Defects Caused Due To Dampness
PRESENTED BY:
DHRUV BASU
K.V.ABHISHEK
SHAHEEN NAZIF
VATSALA SINHA
B.ARCH.5TH YR.
Dampness
Damp is a problem in
buildings. It can result in the
growth of moulds and fungi,
damage to the interior (and
exterior) decor, wood rot, and
ultimately damage to the
structure of the building.
Dampness occurs in
properties for a number of
reasons
1.Rising Dampness
Caused by the absence or breakdown of a
damp proof course or membrane. It is
characterized by wet patches to ground
floors and walls with sometimes a white
powdery 'tidemark' deposit.
POWDERY
RESIDUE
2.Penetrating Dampness
• Caused by such things as old brickwork that
becomes porous, leaking roofs and gutters and
rotted windows and doors.
• Brickwork defects; Movement cracks can allow
water in through the outer skin of the wall.
• It is characterised by localised mould growth,
discolouration to internal decoration, peeling
wallpaper and sagging ceilings.
localized mould
growth and
discoloration.
Moisture patches
Dampness in Earth Walling
As the moisture level increases at the base, the load bearing
capacity of the wall is reduced at the very position where the
loading is greatest.
This can cause the wall to consolidate and spread, and the
render at the base to crack and spall.
Failure to attend to the problem is likely to result in the wall
eventually collapsing.
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1.Moisture can find its way into the walls if the roof covering are
not adequately maintained, if the eaves overhang is insufficient,
or if gutters and down pipes (where needed) are neglected.