Dictionary

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i
Ice & Water Shield Membrane

A special self-adhering waterproofing shingle underlayment designed to protect against water infiltration due to ice dams or wind-driven rain.

Ice Dam

A mass of ice formed at the transition from a warm to a cold roof surface, frequently formed by refreezing meltwater at the overhang of a steep roof, causing ice and water to back up under roofing materials.

Incline

The slope of a roof expressed either in percent or in the number of vertical units of rise per horizontal unit of run.

See also: Slope