Reinforcement composite for a bituminous roofing membrane and method of making the composite

摘要

A roofing membrane ( 10 ) is formed by impregnating and coating a composite material ( 11 ) with a bituminous material. The composite material ( 11 ) is formed with a first layer ( 12 ) made of a non-woven polyester mat. A second layer ( 13 ) is positioned adjacent to the first layer ( 12 ) and is formed as a non-woven fiberglass scrim. An optional third layer ( 14 ) is positioned adjacent to the second layer ( 13 ) and is formed of a non-woven polyester scrim. A fourth layer ( 15 ) is positioned adjacent to the third layer ( 14 ) and is made of a non-woven polyester mat. A fifth layer ( 16 ) is positioned adjacent to the fourth layer ( 15 ) and is also a non-woven polyester mat. The layers ( 12, 13, 14, 15, 16 ) may be attached by needle punching to form the composite material ( 11 ).