Washer for roofing insulation

Details Washer for roofing insulation Washer for roofing insulation

E - Fixed Constructions

04

D

85/141

E04D 3/36 (2006.01) F16B 43/00 (2006.01)

Patent

CA 1294158

Abstract of the Invention A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an inwardly extending lip on the inside surface of the free end of the protrusion. In an alternative embodiment sloping ribs guide a fastener head into snapping engagement with an inwardly projecting lip. In all embodiments a resilient rib is disposed on a shoulder formed in the aperture in the washer. The rib resiliently urges the head of the fastener into engagement with the lip. The washer includes a downwardly extending hub, which may be equipped with means for retaining the washer in a batten strip.

531603

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