Reasons for waterproofing
- floods and leaks happen
- home shifts and settles
- Mold, mildew, and bacteria
- Basement moisture can destroy the structure
Defects Caused by Dampness:
- It causes efflorescence which may ultimately result in disintegration of bricks, stone, tiles, etc.
- It may result in softening and crumbling of plaster.
- It may cause bleaching and flaking of paint with the information of colored patches.
- It may result in warping, buckling and rotting of timber.
- It may lead to corrosion of metal
- It may deteriorate electrical fittings.
- It promotes growth of termites.
- It breeds mosquitoes and creates unhealthy living conditions for the occupants.
Causes of Leakage
For leakage to occur, 3 conditions must be present
- Water in any of its forms must be present.
- Water must be moved along by some type of force, including wind, gravity for above-grade envelope components and hydrostatic pressure or capillary action for below-grade components.
- Finally and the most important, there must be a breach (hole, brak, or some type of opening) in the envelope to facilitate the entry of water into the protected spaces
Available water is moved into the interior of a structure by numerous forces that include:
- Natural gravity
- Wind/Air currents
- Capillary action
- Hydrostatic pressure