Cavity Structural Waterproofing

A cavity is a wall construction with a hollow space at the centre. In layman’s terms, a cavity wall can be described as two skins that have a hollow space separating them. These two skins are usually made out of cinder blocks or bricks, both of which are absorbent and draw in a considerable amount of rainwater.

The two skins of a cavity wall are firmly held together by blocks or metal ties. A water barrier is also installed to prevent water and moisture from affecting the inner surface of the wall. Additionally, a flashing component is also incorporated within the wall to provide a passage for water expulsion. The flashing component starts from the inner wall and ends at the weep holes located at the base of the outer wall. The component is typically located near the wall base, to help the maximum collection of water making its way down the wall.