Fire resistant non-breathable roofing underlayment
OwnerManish Seth, Adem Chich +1inventors
InventorsManish Seth, Adem Chich, Yunwa Wilson Cheung
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Abstract
A multi-layered fire-resistant roofing underlayment is disclosed. The roofing underlayment has a core of aluminum foil. On each side of the aluminum foil is a layer of nonwoven material. A lamination coating is between the aluminum foil layer and the layers of nonwoven material. At the bottom of the roofing underlayment is a backside coating layer. The roofing underlayment may be utilized in bats or rolls.
Claims12
A multilayered roofing underlayment configured to be positioned adjacent to and directly above a roof structure as well as adjacent to and direct below a roof covering of asphalt shingles, wherein the multilayered roofing underlayment and said covering together form a roofing system;
- the multilayered roofing underlayment comprising:
- a) a first layer of nonwoven material;
- b) a second layer of polymeric lamination coating adjacent to said first layer;
- c) a third layer of aluminum foil adjacent to said second layer;
- d) a fourth layer of polymeric lamination coating adjacent to said third layer wherein said second and fourth layer polymeric coatings are in direct contact with said third layer foil;
- e) a fifth layer of nonwoven material adjacent to said fourth layer,
- f) a sixth layer of backside coating adjacent to said fifth layer;
- and
- g) wherein a product weight of said roofing underlayment is from 90 to 270 grams per square meter;
- and
- h) wherein said multilayered roofing underlayment is configured to be part of a roofing system that is sufficiently fire resistant to meet the standards under ASTM E108/UL 790 for Class A requirements when used with class A or class B shingles;
- and
- i) wherein said multilayered roofing underlayment is non-breathable.
Dependencies are inferred from the claim text.