Dampness
Dampness in buildings can cause an increase in moisture content of timber
and ultimately produce conditions suitable for the development of fungal
decay. Excessive dampness in buildings can cause many other problems.
Most insulation can be rendered ineffective when it becomes wet; plaster
and decorations become spoilt; mortar and brickwork deteriorate; electrical
short circuiting can occur; unhygienic conditions and mould growth can develop.
Dampness will increase the level of humidity in the building and contribute
to condensation problems. Excessive dryness can be as unacceptable as excessive
damp. There are many possible causes of dampness in buildings; defects in the
roof, walls and plumbing can cause penetrating dampness, and faults in damp
proof courses at ground level can permit rising damp to occur. The life
style of the occupants and the amount of heating, ventilation and insulation
can influence the development of condensation.
Any surveyor carrying out a diagnosis of causes of dampness in buildings
must be aware of all possible sources of damp and their effects, so that
correct and appropriate remedial measures will be carried out.
See also: