Metal roofing system
AssigneeMilliken & Company
InventorDavid E. Wenstrup
Life of this patent
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Abstract
A metal roofing system contains, in order a roof deck, a fire resistant (FR) fleece, and a metal sheeting system. The second side of the FR fleece faces the roof deck. The FR fleece contains a plurality of FR staple fibers and a plurality of first char scaffold fibers. The FR fleece has a fleece thickness defined as the distance between the first side and the second side. The metal sheeting system contains a plurality of metal sheets having an upper and lower side, where the lower side of the metal sheeting system faces the first side of the FR fleece. The metal sheets have an average metal sheet thickness defined as the distance between the upper and lower sides, where the thickness of the FR fleece is at least about 3 times the average metal sheet thickness. The FR fleece has a density of less 0.5 g/cm3.
Claims19
A metal roofing system comprising, in order:
- a roof deck having an upper side;
- a fire resistant (FR) fleece having a first side and a second side, wherein the second side of the FR fleece faces the roof deck, wherein the FR fleece comprises a reinforcing scrim embedded therein, a plurality of FR staple fibers and a plurality of first char scaffold fibers selected from the group consisting of partially oxidized acrylonitrile fibers, silica fibers, and ceramic fibers, wherein the FR fleece has a fleece thickness defined as a distance between the first side and the second side;
- and,
- a metal sheeting system comprising a plurality of metal sheets having an upper and lower side, wherein the lower side of the metal sheeting system faces the first side of the FR fleece, wherein the metal sheets have an average metal sheet thickness defined as a distance between the upper and lower sides,
- wherein the fleece thickness is about 3 times to about 5 times the average metal sheet thickness, and wherein the FR fleece has a density of less than 0.5 g/cm3.
Dependencies are inferred from the claim text.