Metal roof reroofing system and method
AssigneeBridgestone/Firestone, Inc.
InventorH. A. Karrfalt
Life of this patent
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Abstract
A reroofing system and method for weatherproofing the metal panels which are attached to an existing roof deck by series of fasteners. A tape laminate formed of butyl rubber and unvulcanized EPDM is applied over the series of fasteners and over the seams formed by adjacent and overlapping panels to provide a weatherproof seal therefor. The butyl rubber has sufficient natural tackiness to secure the EPDM to its top surface and to secure the bottom surface of the tape to the metal panels. The tape laminate has an elongation of approximately 600% and thus is unaffected by panel and building movements. A coating of an acrylic paint may be applied over the tape laminate and remaining surfaces of the roof panels to increase the weatherproofing effectiveness thereof and to provide an aesthetically pleasing appearance.
Claims12
A metal roofing system including:
- (a) a plurality of sheet metal panels attached to a structure of a building and forming seams at the junction of adjacent panels;
- and
- (b) strips of an adhesive tape laminate positioned over the seams of the adjacent panels to form a weatherproof seal thereto, said tape laminate being formed of unvulcanized EPDM and butyl rubber wherein the butyl rubber has sufficient tackiness to secure the tape laminate to the building structure.
A method of reroofing an existing metal roof of the type having a plurality of sheet metal panels secured to a structure of a building in an overlapping relationship by a series of fasteners and forming seams at the junction of the overlapped adjacent panels, including the step of applying strips of an adhesive tape laminate over the seams of the overlapped adjacent metal panels and over the series of fasteners to form a weatherproof seal therefor, said tape laminate being formed of unvulcanized EPDM and butyl rubber with the butyl rubber having sufficient tackiness to secure the tape laminate to the building structure.
Dependencies are inferred from the claim text.