US 6,981,349 B1
Roof waterproofing system consisting of an organic resin protected by an aluminum-copolymer composite foil
Celso Martinez, Jr., Sao Carlos (Brazil)
Assigned to Fundacao de Amparo a Pesquisa de Estado de Sao Paulo, Sao Paulo (Brazil)
Appl. No. 9/490,740
PCT Filed Jul. 28, 1998, PCT No. PCT/BR98/00053
§ 371(c)(1), (2), (4) Date Jan. 25, 2000,
PCT Pub. No. WO99/06646, PCT Pub. Date Feb. 11, 1999.
Int. Cl. E04B 5/00 (2006.01)
U.S. Cl. 52—409 15 Claims
OG exemplary drawing
 
1. A waterproofed roofing system for application over a roof surface, comprising:
an adhesive organic resin layer not containing asphalt and applied over said roof surface, said resin layer being visco-elastic after completion of said system; and
a composite film applied to said resin and including a central aluminum layer laminated between respective thermoplastic copolymer layers.