Lap seam for liquid containment systems and method of forming

Details Lap seam for liquid containment systems and method of forming Lap seam for liquid containment systems and method of forming

B - Operations, Transporting

32

B

154/119, 20/50,

B32B 3/06 (2006.01)

Patent

CA 1325164

LAP SEAM FOR LIQUID CONTAINMENT SYSTEMS AND METHOD OF FORMING Abstract A membrane type liquid containment system such as a membrane roof, pond liner and the like is disclosed wherein a large membrane is formed by adhering together individual membrane sheets at lap seams or field splices. The field splice includes a primary adhering seal formed by a splicing cement. The splice also includes a thick bead of a sealant applied between the overlapped edges. This seal acts to form a secondary or redundant seal in the field splice whereby any failure in the splicing cement or primary bond does not cause failure. A method of forming this seal is also described which permits application of the lap sealant after the cement has been applied while the cement is developing body or strength.

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