WATER PROOFING

In building construction, waterproofing is a fundamental aspect of creating a building envelope, which is a controlled environment.

The roof covering materials, siding, foundations, and all of the various penetrations through these surfaces must be water-resistant and sometimes waterproof.

Roofing materials are generally designed to be water-resistant and shed water from a sloping roof, but in some conditions, such as ice damming and on flat roofs, the roofing must be waterproof.