Patent ID: 7299599
Filing Date: 2007-11-27
Classification: E04D,Y10S,Y10T

Abstract:
1. A method of adhering together overlapping portions of roofing sheets of a built-up roofing system without the use of heat welding, hot asphalt, or liquid adhesive, comprising: adhering a first roofing sheet to an underlying layer of a built-up roofing system; the first roofing sheet having a length and a width; the first roofing sheet having an upper major surface defined by the length and the width of the roofing sheet; the upper major surface of the first roofing sheet having first and second lateral edge portions and first and second end edge portions; locating a second roofing sheet on and adhering a second roofing sheet to an underlying layer of a built-up roofing system; the second roofing sheet having a length and a width; the second roofing sheet having a lower major surface defined by the length and the width of the roofing sheet; the lower major surface of the second roofing sheet having first and second lateral edge portions and first and second end edge portions; the second roofing sheet being located to have one of the edge portions of the second roofing sheet and one of the edge portions of the first roofing sheet in overlapping relationship with the upper surface of the one edge portion of the first roofing sheet opposing the lower surface of the one edge portion of the second roofing sheet; the upper surface of the one overlapping edge portion of the first roofing sheet being a granule surface: selecting a roofing component adhering assembly comprising a bitumen layer and a first release sheet; the bitumen layer having a length, a width and a thickness; the bitumen layer having a first major surface and a second major surface each defined by the length and the width of the bitumen layer; the length of the bitumen layer being substantially equal to a length of one of the overlapping edge portions; the width of the bitumen lever being substantially equal to a width of one of the overlapping edge portions; and the thickness of the bitumen layer being between 0.007 inches and 0.375 inches and sufficient to enable the bitumen layer to flow into the interstices formed by the upper granule surface of the one overlapping edge portion of the first roofing sheet to securely bond and seal the one overlapping edge portion of the second roofing sheet and the one overlapping edge portion of the first roofing sheet together, the first release sheet being substantially coextensive with the first major surface of the bitumen layer; the first release sheet having a first major surface and a second major surface; the first major surface of the first release sheet being in contact with the first major surface of the bitumen layer; and the first major surface of the first release sheet being separable from the first major surface of the bitumen layer, and adhering the lower surface of the one overlapping edge portion of the second roofing sheet to the upper surface of the one overlapping edge portion of the first roofing sheet with the bitumen layer of the roofing component adhering assembly flowing into the interstices formed by the upper granule surface of the one overlapping edge portion of the first roofing sheet to form a watertight, weather-secure seam by adhering the second major surface of the bitumen layer of the roofing component adhering assembly only to one of the opposing surfaces of the overlapping edge portions, removing the first release sheet from the first major surface of the bitumen layer of the roofing component adhering assembly, and adhering the first major surface of the bitumen layer of the roofing component adhering assembly only to the other of the opposing surfaces of the overlapping edge portions.