Corrugated roofing sheets of synthetic fiber reinforced cement, with a rough surface due to the presence of granular material
AssigneeS.I.D.I. Societe Internationale de Developpements Industriels S.A. Holding
InventorSivio Magnani
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Abstract
This invention relates to corrugated roofing sheets for building, made of a mixture of cement and inert materials, reinforced with synthetic fibers in fibrillated mesh form, characterized by having a rough outer surface due to the presence of surface granular material. The granular material is applied to the sheets during their finishing but before the cement has started to set, by simply strewing it over the sheet surface.
Claims5
A corrugated self-supporting roofing sheet having a rough surface and consisting of a mixture of cement and sand reinforced with polypropylene fibers in fibrillated mesh form, said rough surface being due to granular material applied to the sheet surface, said granular material consisting of mineral substances ground and sieved to a particle size between 0.5 and 1.5 mm which are applied to said surface in a quantity between about 500 and about 1000 g/m.sup.2 and said polypropylene fibers being present in an amount of between 2.0 and 3.5% by weight of the cement, sand and mineral substances.
Dependencies are inferred from the claim text.