Method for applying a screed coat to a roof surface

Details Method for applying a screed coat to a roof surface Method for applying a screed coat to a roof surface

1982-12-15

1985-01-01

Beck, Shrive P.

Coating processes

Solid particles or fibers applied

Roofing produced

427140, 427215, 427426, 427427, 118303, 118308, 52516, 52714, B05D 112

Patent

active

044916086

ABSTRACT:
To build up a screed coat on a roof surface, a granular expanded inorganic material is subjected to an atomized spray of an adhesive consisting of a solution of waterglass and a hardener therefor so as to form a thin film of adhesive on each grain of the material, and the spray coated granular material thus obtained is immediately conveyed to and poured out on the roof surface. It is then spread over the roof surface and compressed to form a coherent layer constituting the screed coat. This may form a base for the superposition of insulating boards and a waterproof roof covering. The method is particulary useful in the renovation of deficient roofs originally built without a gradient towards outlets or gutters. Apparatus for carrying out the method comprises a device for causing the granular material to drop in the form of a cylindrical curtain, a rotational atomizer for spraying two component adhesive onto the surfaces of the dropping grains and a suction blower system for pneumatically conveying granular material to the spray coating station and, after treatment therein, to a pouring device on the roof.

REFERENCES:
patent: 1973523 (1934-09-01), Muller
patent: 2583292 (1952-01-01), Bowen et al.
patent: 2729574 (1956-01-01), Schwarz
patent: 2732311 (1956-01-01), Hartwright
patent: 4275682 (1981-06-01), Weber

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