SECURING EXTERIOR CONSTRUCTION MATERIAL

摘要

A foam roofing underlayment (14, 46) is provided with a reinforcement membrane 24 having an array of fastener elements 26 across a broad face for engaging fastener elements 36 on a flexible roof membrane (16, 116, 216, 316, 416). The underlayment (14, 46) is formed by molding foam (70) between the reinforcement membrane (24) and a carrier sheet (62). The underlayment (14, 46) is secured to the roof (12, 206, 306) using washers (20) having fastener elements (26)a for engaging the fastener elements (36) of the flexible roof membrane (16, 116, 216, 316, 416). An anti-peel flap (25) with fastener elements (26a) is provided around the periphery of the washers (20a). A slip sheet (150) is used between the underlayment (114) and the flexible roof membrane (116) to permit accurate positioning of the flexible roof membrane (116) prior to engagement of the fastener elements (126, 136). The interstices between the fastener elements (26, 36 126, 136) provide lateral moisture paths to vents (152) in the flexible roof membrane (116).