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US 7,743,573 B1Granted
Roofing composition
AssigneeEngineering Innovations, LLC
InventorsCraig Paul Doberstein, Courtney Van Roy Harris
Life of this patent
Estimating the term…
Abstract
A roofing composition is formed as a shingle or from one or more separate sheets. The roofing composition includes a storage layer with an inert non-growing storage medium to absorb and detain precipitation for gradual release. The roofing composition reduces hydraulic discharge rates to avoid overloading downstream drainage systems.
Claims16
A roofing shingle, comprising:
- a base layer, wherein the base layer is impermeable to water;
- and
- a storage layer over the base layer, wherein the storage layer comprises inert non-growing storage media to absorb and temporarily detain precipitation for gradual release through the storage media;
- the storage layer has the capacity to detain at least 0.3175 centimeters (0.125 inches) of precipitation when fully saturated and has a hydraulic conductivity of 0.00001 to 0.1 centimeters per second;
- a drainage layer over the base layer and below the storage layer, wherein the drainage layer comprises means to direct water downslope beneath the drainage layer;
- and a separation later between the drainage layer and the storage layer to support the storage layer.
3 more elements
A roof, comprising:
- a plurality of roofing shingles, wherein each roofing shingle comprises:
- a base layer, wherein the base layer is impermeable to water;
- a storage layer over the base layer, wherein the storage layer comprises inert non-growing storage media to absorb and temporarily detain precipitation for gradual release through the storage media;
- the storage layer has the capacity to detain at least 0.3175 centimeters (0.125 inches) of precipitation when fully saturated and has a hydraulic conductivity of 0.00001 to 0.1 centimeters per second;
- a drainage layer over the base layer and below the storage layer, wherein the drainage layer comprises means to direct water downslope beneath the drainage layer;
- and a separation later between the drainage layer and the storage layer to support the storage layer;
- and
- a portion of a roofing shingle overlaps with a portion of an adjacent roofing shingle.
5 more elements
A roofing system, comprising:
- a base layer, wherein the base layer is impermeable to water;
- a storage layer over the base layer, wherein the storage layer comprises inert non-growing storage media to absorb and temporarily detain precipitation for gradual release through the storage media;
- the storage layer has the capacity to detain at least 0.3175 centimeters (0.125 inches) of precipitation when fully saturated and has a hydraulic conductivity of 0.00001 to 0.1 centimeters per second;
- a drainage layer over the base layer and below the storage layer, wherein the drainage layer comprises means to direct water downslope beneath the drainage layer;
- and a separation layer between the drainage layer and the storage layer to support the storage layer.
2 more elements
Dependencies are inferred from the claim text.