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.
申请公布号
US8065854(B1)
申请公布日期
2011.11.29
申请号
US20100787969
申请日期
2010.05.26
申请人
DOBERSTEIN CRAIG PAUL;HARRIS COURTNEY VAN ROY;ENGINEERING INNOVATIONS, LLC