Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1981-05-29
1983-06-07
Thibodeau, Paul J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156249, 156337, 428 40, 428 41, 428143, 428291, 428332, B32B 300, B32B 516, B32B 1100
Patent
active
043869815
ABSTRACT:
Roofs of buildings and the like are waterproofed by applying thereto a plurality of preformed, sheet-like, flexible waterproofing laminates each comprised of (i) a lower sheet support layer (preferably a plastic film or foil) non-removably adhered to (ii) an intermediate layer of waterproofing, self-adhesive, bituminous composition such as rubberized asphalt which in turn is removably adhered to (iii) an upper layer of protective sheet material (e.g. siliconized paper). The surface of the lower sheet support (i) remote from the bituminous layer (ii) is non-adherent and the laminate is applied to the roof with such non-adherent surface adjacent the roof. The uppermost protective sheet layer (iii) is subsequently removed exposing the self-adhesive bituminous layer to which is thereafter applied a weathering layer (e.g. a coating of gravel). The non-adherent surface nature of the lower sheet support layer allows any moisture entrapped below the applied waterproofing laminate to move and be distributed or vented. The self-adhesive bituminous layer shields the underlying sheet support (i) from weather and sun, and functions both as a waterproofing layer and as an adhesive layer for the finally-applied weathering layer. The inventive waterproofing method is ideally suited for use over roof decks which contain hydratable thermoinsulating concrete layers.
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KMM.TM. Koppers Roofing & Waterproofing (1976), Trade Brochure of Koppers Co.
Zonolite.RTM. Roof Deck Insulation-Brochure No. 7.15Ge (1980), W. R. Grace & Co.
CRM.RTM. Self-Adhesive Roof Systems--Brochure No. 7.1Gr (1980), W. R. Grace Co.
Baker William L.
Thibodeau Paul J.
W. R. Grace & Co.
Wasatonic John J.
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