Products / Type II Glasbase

Type II Glasbase (product code 2891) is an asphalt-impregnated fiberglass reinforcing membrane for cold-process cap-sheet systems over smooth roof surfaces and a base sheet for MIGHTYPLATE modified bitumen membrane. The data sheet lists a 3-square roll (36 inches by 108 feet) weighing 71 pounds, a membrane thickness of 40 to 45 mils and a minimum tensile strength of 55 pounds per inch. It states the sheet is approved by Underwriters Laboratories as a base sheet for torch-applied modified bitumen roll roofing, without naming a standard or class.