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Pallets

Wooden platforms used for shipping shingles.

Penetrations

Anything that passes through the surface decking of the roof, such as chimneys, vents, pipes, or any other hole in the roof like a...

Pitch

The steepness of a roof determined by the degree of roof incline expressed as the ratio of the rise, in feet, to the span, in...

Ply

A single layer of roofing (i.e., one-ply, two-ply).

Ponding

The gathering of water after rainfall at low areas of a roof that stays wet when other parts of the roof have dried.