| http://www.w3.org/ns/prov#value | - Roofing operations means all work performed in connection with the installation of roofs, including related metal work such as flashing, and applying weatherproofing materials and substances (such as waterproof membranes, tar, slag or pitch, asphalt prepared paper, tile, composite roofing materials, slate, metal, translucent materials, and shingles of asbestos, asphalt, wood or other materials) to
|
