| 摘要 |
An expanse of thermoplastic flashing material is provided with a flap of like material. Upon flexing of the flashing to accommodate corner surfaces of a roof structure, the flap may be heat welded to same to shape the flashing to correspond to the surfaces of the corner. A modified form of the flashing includes a trapezoidal flap heat welded to the flashing expanse and having an extension thereon for securement to an underlying portion of the flashing expanse subsequent to shaping of the flashing to an outside corner of a roof structure. Sloping walls may be sealed as well as vertical, perpendicular walls may be accommodated by the modified flashing. A still further flashing modification includes first and second flaps particularly suited for abutment with vertical intersecting wall surfaces with the flaps being permanently secured to an expanse of flashing by heat welds.
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