초록 ▼

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 overl

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.

대표청구항 ▼

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A method for constructing a roof on a structure, comprising:applying a base layer over an underlying support structure, wherein the base layer is impermeable to water;applying a storage

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A method for constructing a roof on a structure, comprising:applying a base layer over an underlying support structure, wherein the base layer is impermeable to water;applying 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, wherein the storage layer comprises two or more zones having a different hydraulic conductivity, wherein the zones are arranged such that water can be conveyed through the storage layer at variable design rates.