Method for applying waterproof coating layer to building roof

摘要

A simple and efficient method for applying a waterproof coating layer to a roof is disclosed. Pressure feed equipment for a water-proofing two-component urethane resin is installed on the ground, which includes a couple of tanks (4,5) storing predetermined amounts of a prepolymer and a hardener, a pneumatic pump (6) for forwarding separately the agents in a predetermined ratio, and extension hoses (15,16), each of one end of which is connected to the pump 6. A mixing and discharging equipment (3) includes a static mixer (19) for mixing the prepolymer and the hardener and a discharging nozzle 19a equipped on the mixer (19) integrally, for discharging the mixed resin towards a surface to be coated. The discharging and mixing equipment (3) is disposed on a rooftop and the other ends of the hoses (15,16) are connected thereto. The viscosity at 20 DEG C of the prepolymer is set at 4000-7000 cps from spring to autumn and at 1500-3500 cps during winter. The viscosity of the hardener is set at 3000-15000 cps from spring to autumn and at 3000-7500 cps during winter.