Multilayer Roofing Membrane and Method of Applying Same
AssigneeCapital Coating, Inc.
InventorMervin L. Fisher
Life of this patent
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Abstract
A roofing membrane has at least five layers, including: a first adhesion layer, a second reinforcing layer over the first layer, a third waterproofing layer over the second layer, a fourth waterproofing protection layer over the third layer, and, a fifth layer over the fourth layer comprising a weathering coating and a sacrificial coating. A method of applying the layers is also disclosed.
Claims10
A roofing membrane comprising at least five layers comprising:
- a) a first adhesion layer;
- b) a second reinforcing layer over the first layer;
- c) a third waterproofing layer over the second layer;
- d) a fourth waterproofing protection layer over the third layer;
- and,
- e) a fifth layer over the fourth layer comprising a weathering coating and a sacrificial coating.
A roofing membrane comprising:
- a) a first urethane coating defining an adhesion layer;
- b) a polyester fabric or a textile sheet material over the adhesion layer defining a reinforcing layer;
- c) a second urethane coating over the reinforcing layer defining a waterproofing layer;
- d) a silicone coating over the waterproofing layer defining a waterproofing protection layer;
- and,
- e) a combination of a second silicone coating defining a weathering layer and grit/granules coating thereover defining a sacrificial coating.
A roofing membrane comprising at least five layers comprising:
- a) a first adhesion layer defined by a first wet application of urethane;
- b) a second reinforcing layer defined by a polyester fabric or a textile sheet material applied over the first layer while the first layer is wet;
- c) a third waterproofing layer defined by a second wet application of urethane over the second layer;
- d) a fourth waterproofing and protection layer defined by a first wet application of silicone over the third layer after the third layer has dried;
- and,
- e) a fifth weathering and sacrificial layer defined by a second wet application of silicone over the fourth layer and an application of grit/granules over the second wet application of silicone while still wet.
A method of applying a new roofing system over an existing roofing system comprising:
- a) applying a first coating of urethane in wet form over the existing roofing system;
- b) applying a polyester fabric or a textile sheet material over the first coating of urethane while the first coating of urethane is wet;
- c) applying a second coating of urethane over the polyester fabric or textile sheet material in wet form;
- d) applying a first coating of silicone over the second coating of urethane after the second coating of urethane has dried;
- e) applying a second coating of silicone in wet form over the first coating of silicone, and while the second coating of silicone is wet, applying grit/granules over the second coating.
Dependencies are inferred from the claim text.