Roof Membranes: New Systems, New Problems

by Kneeland A. Godfrey, Jr., Sr. Ed.; Civil Engineering Magazine, ASCE World Headquarters, 345 East 47th Street, New York City, NY.,

Serial Information: Civil Engineering—ASCE, 1986, Vol. 56, Issue 3, Pg. 76-79

Document Type: Feature article


Market trends in roof membranes are described; most important is the use of single-ply membranes of rubber or plastic in the past decade. A swing to modified bitumen membranes is predicted for the coming decade. With the hundreds of new membrane products have come new problems; most are due to faulty design or installation, however, and standards and practice guidelines are being written. Owners and contractors who demand only the best, trouble-free flat roofs are more likely to get them. The approaches of a roofing contractor and of one of the larger building owners (Safeway grocery chain with 4,000 stores) are described. Briefly profiled is the type of building project which is more likely to experience roof leaks; it tends to be the fast-tracked job coordinated by a construction manager, with marginal specifications.

Subject Headings: Roofs | Membranes | Owners | Contractors and subcontractors | Plastics | Asphalts | Geological faults | Safety

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