| 摘要 |
<p>A device (10) for terminating a roof surface at a vertical edge in a waterproof and airtight manner may serve as a flashing strip at a parapet wall, a wall cap, a roof edge, an expansion joint or in other roofing applications. The device comprises a relatively rigid member (12), typically of sheet metal or the like, and a flexible member (14), typically of modified coal tar bitumen, EPDM, or other suitable roofing material. The device has a channel (16) formed in the rigid member along a longitudinal edge that receives the flexible member in an airtight and watertight manner. In this configuration, the flexible member provides a covering for the fastening surface (24) on the rigid member, which is fastened by conventional means (108) to the roofing surface (100) and the underlying support structure (110). The preferred channel is formed from a pair of longitudinal bends (18, 20) made in opposite directions such that a 'Z' shape cross section is formed. The first edge (28) of the flexible member is coated with an appropriate sealant, positioned into the channel and compressed into place. In some applications, at least one portion (90) of the rigid member near the first bend forming the 'Z' shape cross section is pressed into the first edge of the flexible member, as achieved by a metal press brake, with the press brake in some instances perforating the rigid member at the point of impressing.</p> |
