Roofing composition and structure
US4331726A · kind A · utility
Inventor
Key dates
| Filing date | Oct 27, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Oct 27, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pourable roofing composition composed of chopped discrete small chunks or pieces of closed cell plastics material, such as polystyrene, polyurethane, and the like; inexpensive granular or powder particles of fly ash or the like inert particulate material which will hold down the light cellular plastic pieces; and an emulsion caulking or sealing type binder or adhesive capable of setting under atmospheric conditions to seal the composition into an all weather resisting waterproof layer. Suitable binders or adhesives are liquid based emulsions of acetates, acrylic resins, epoxy adhesives, and the like. The composition is flowable, can be premixed remote from the building or use site, can be transported to the site in a concrete mixer type truck, and can thereafter be spread over a roof base and screed to the desired contour and level. After an initial set, an overcoat of a sealer such as an acrylic resin-type sealer can be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.