Construction

Construction

The art, trade, or work of building.

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Construction > Roofing

coating

Construction; Roofing

A layer of viscous asphalt applied to the base material into which granules or other surfacing is embedded.

collar

Construction; Roofing

Pre-formed flange placed over a vent pipe to seal the roof around the vent pipe opening. Also called a vent sleeve.

closed cut valley

Construction; Roofing

A method of valley treatment in which shingles from one side of the valley extend across the valley while shingles from the other side are trimmed two inches from the valley ...

ClassB

Construction; Roofing

Fire-resistance rating that indicates roofing materials are able to withstand moderate exposure to fire originating from sources outside the building.

ClassC

Construction; Roofing

Fire-resistance rating that indicates roofing materials are able to withstand light exposure to fire originating from sources outside the building.

Class A

Construction; Roofing

The highest fire-resistance rating for roofing as per ASTM E-108. Indicates roofing is able to withstand severe exposure to fire originating from sources outside the building.