Claims
- 1. 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.
- 2. The sheet of claim 1 wherein said granular material is limestone.
- 3. The sheet of claim 1 wherein said granular material is marble.
- 4. The sheet of claim 1 wherein said granular material is silica.
- 5. The sheet of claim 1 wherein said granular material is granite.
Priority Claims (1)
Number |
Date |
Country |
Kind |
21920/87[U] |
Jul 1987 |
ITX |
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Parent Case Info
This application is a Rule 60 divisional application of Ser. No. 07/464,566, filed Jan. 16, 1990, now U.S. Pat. No. 4,960,616, which in turn is Rule 62 continuation application of Ser. No. 07/208,482, filed Jun. 20, 1988, now abandoned.
US Referenced Citations (12)
Divisions (1)
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Number |
Date |
Country |
Parent |
464566 |
Jan 1990 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
208482 |
Jun 1988 |
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