Reinforced waterproofing system for porous decks
OwnerPhilip L. Funkhouserinventor
Life of this patent
Estimating the term…
Abstract
A composite reinforced roof is formed by applying to a roof deck a preformed membrane which has a tacky lower layer formed from rubberized asphalt. The second layer of the preformed membrane is a reinforcing mesh material embedded in the surface of the rubberized asphalt. This is applied to a roof deck and subsequently overcoated with a molten coating of rubberized asphalt. The self-adherent rubberized asphalt membrane prevents formation of bubbles and pinholes in the molten rubberized asphalt layer. This is particularly beneficial when the roof deck surface is lightweight structural concrete which releases gas when heated.
Claims11
A roof structure comprising:
- a roof deck;
- a membrane having a first layer adhered to said deck and a second layer facing away from said deck;
- said first layer comprising a preformed uniform self-adherent tacky rubberized asphalt;
- said second layer comprising a reinforcing mesh partially embedded in said first layer;
- a third layer covering and adherent to said second layer, said third layer comprising a sealing layer selected from the group consisting of rubberized asphalt, tacky butyl rubber and polyurethane, wherein said roof deck is lightweight structural concrete.
A method of waterproofing a horizontal surface comprising applying onto said surface a preformed composite membrane, said membrane having a first layer and a second layer, said first layer comprising rubberized asphalt which is tacky at 40.degree. F., said second layer comprising a mesh partially embedded in said first layer, wherein said first layer is applied against said surface and adheres to said surface;
- coating said second layer with a layer of molten sealant and allowing said molten sealant layer to at least partially solidify.
Dependencies are inferred from the claim text.