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US 6,296,912 B1Granted
Roofing material with fibrous mat
AssigneeNorthern Elastomeric, Inc.
InventorThomas Zickell
Life of this patent
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Abstract
A roofing membrane material is disclosed. The material is characterized in that it includes a woven or non-woven fibrous mat having an adhesive asphalt coating, such as a two-layer asphaltic coating applied to one surface thereof. The asphaltic coating can be a first relatively non-adhesive asphaltic material that infiltrates a portion of the fibrous mat and a second, relatively adhesive asphaltic material deposited upon an exposed surface of its non-adhesive counterpart.
Claims16
A rooting membrane material which comprises:
- a) a fibrous mat having an upper surface and a lower surface;
- and
- b) an adhesive asphalt coating comprising a double-layer asphaltic coating comprising:
- i) a relatively non-adhesive asphaltic material layer deposited on the lower surface of the fibrous mat in a manner such that it partially infiltrates into but not completely through the fibrous mat, and
- ii) a relatively adhesive asphaltic material layer adhered to an exposed surface of the relatively non-adhesive asphaltic material layer,
- wherein the relatively non-adhesive asphaltic material layer does not extend through the fibrous mat to the upper surface thereof.
3 more elements
A roofing membrane material which comprises:
- a) a fibrous mat having an upper surface and a lower surface, the mat comprising a non-woven fiberglass having an ethylene vinyl acetate coating thereon;
- and
- b) a double-layer asphaltic coating adhered to the lower surface of the mat, the double layer coating comprising
- i) a relatively non-adhesive asphaltic material layer comprising an oxidized asphalt and a filler material;
- and
- ii) a relatively adhesive asphaltic material layer adhered to the relatively non-adhesive asphaltic material layer, the relatively adhesive asphaltic material layer comprising a flux asphalt, a filler material, a material selected from the group consisting of styrene-butadiene copolymers and styrene-butadiene-styrene copolymers, and a tackifying oil,
- wherein the relatively non-adhesive asphaltic material layer is deposited on the lower surface of the fibrous mat in a manner such that it infiltrates into the mat, but does not extend therethrough to the upper surface of the mat.
4 more elements
A roofing membrane material which comprises:
- a) a fibrous mat having an upper surface and a lower surface, the mat comprising a non-woven polyester;
- and
- b) a double-layer asphaltic coating adhered to the lower surface of the mat, the double layer coating comprising
- i) a relatively non-adhesive asphaltic material layer comprising an oxidized asphalt and a filler material;
- and
- ii) a relatively adhesive asphaltic material layer adhered to the relatively non-adhesive asphaltic material layer, the relatively adhesive asphaltic material layer comprising a flux asphalt, a filler material, a material selected from the group consisting of styrene-butadiene copolymers and styrene-butadiene-styrene copolymers, and a tackifying oil,
- wherein the relatively non-adhesive asphaltic material layer is deposited on the lower surface of the fibrous mat in a manner such that it infiltrates into the mat, but does not extend therethrough to the upper surface of the mat.
4 more elements
Dependencies are inferred from the claim text.