NOTE:

This guide specification covers the requirements for bituminous dampproofing to resist passage of moisture/water in the absence of hydrostatic pressure. It is intended to be used where protection is required against ingress of water by capillary action resulting from occasional exposure to moisture or where reduced transfer of water vapor through the surface is necessary. Use of bituminous dampproofing should be considered for conditions such as the following:

1. Exterior side of exterior concrete or masonry walls enclosing occupied spaces below grade where a head of water or unusually wet soil conditions are not present (use Section 07 12 00, BUILT-UP BITUMINOUS WATERPROOFING when head of water exists).

2. Backside of concrete or masonry retaining walls and stone facing where percolating of water through the wall or facing would produce objectionable staining.

3. Inside surface of single wythe, exterior, furred concrete or masonry walls above grade where reduction of transfer of water vapor through the wall is necessary.

4. Cavity face of interior wythe of masonry cavity walls.