OMG Roofing Products has introduced PowerGrip, a roof mount system designed to secure rooftop solar racks and other equipment to thermoplastic (TPO and PVC) roofing membranes.
A drain shall be placed around the perimeter of a foundation that consists of gravel or crushed stone containing not more than 10-percent that passes through a No. 4 (4.75 mm) sieve.
In situations where the parapet wall extends above the maximum 12-inch flashing height and wall waterproofing is required, there are several options. In the case of concrete or masonry walls: waterproofing can be provided by installation of a membrane covering, a metal covering or a waterproofing coating.
