It is possible for dampness to penetrate into a building through the walls by one or more of three ways:
- By the rain penetrating the head of the wall and soaking down into the building below the roof level
- BY the rain beating against the external wall and soaking through the fabric into the building
- By ground moisture entering the wall at or near the base and creeping up the wall by capillary action and entering the building above the ground floor level.
Dampness pentration can be overcame by :
- Inserting a suitable damp-proof courses in the thickness of the wall
- Applying to the exposed face of the wall a barrier such as cement rendering or some suitable cladding such as vertcal tile hanging
- COnstructing a cabity wall , whereby olny the external skin becomes damp , the cavity providing a suitable barrier to the passage of moisture throught the wall
没有评论:
发表评论