Patent ID: 8156700

Claim:
An assembly for sealing a rooftop and at least one type of projecting conduit including at least one of a projecting pipe or an HVAC duct, comprising: a plurality of thermoformed membranes provided in sheet form and which are configured for applying over an exterior of the rooftop, said membranes being directly heat welded to one another along overlapping edges in interlocking fashion; a further plurality of membranes configured for applying about an extending length of the conduit and likewise being directly heat welded to one another along overlapping edges; a boot shaped membrane applied over and directly welded to an interfacing location established between a proximate rooftop membrane and a further conduit wrapped membrane; said boot further comprising an outer radially extending portion and an inner diameter extending nipple portion contacting an exposed surface of said conduit a mechanical fastener applied over said inner nipple portion; and said assembly adapted to providing a vapor barrier across the roof and conduit.