Importance

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Abstract

A taped and double cemented or glued rubber joint for use in connecting together the lapped cemented ends of adjacent cured rubber membranes in a roof construction, and for giving protection thereto. The lapping ends of the cured rubber membranes are sealed together by means of cement or the like, providing an adhesive contact system sealing the seam between adjacent membranes. An additional sealing means is provided which is premade and is adapted to be caused to adhere to both portions of both of the overlapping adjacent rubber membranes. This tape or additional sealing means is a composite structure and is applied over the seam between adjacent membranes providing double sealing structure and the tape comprises a lower uncured gum rubber strip which is applied over a portion of one rubber membrane which laps over a portion of the other rubber membrane and also includes a portion which extends over and is cemented to a part of the other membrane and adjacent to the end edge of the rubber membrane. The composite tape also includes a strip of cured reinforced rubber which is adhesively connected to the upper surface of said lower uncured gum rubber strip and is shaped to conform thereto.

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First Claim