Selvage Roofing Definition

That portion of roll roofing overlapped by the succeeding course to obtain double coverage.

Selvage roofing definition.

A selvage or selvedge is a self finished edge of a piece of fabric which keeps it from unraveling and fraying. The edge on either side of a woven or flat knitted fabric so finished as to prevent raveling specifically. A narrow border often of different or heavier threads than the fabric and sometimes in a different weave. In knitted fabrics selvages are the unfinished yet structurally sound edges that were neither cast on nor bo.

Area does not tie into any other roofs. An edge as of fabric or paper meant to be cut off and discarded. Shed roof roof design of a single roof plane. Breather type with fiberglass backing to reduce wrinkles and buckles.

Shingle mate gaf s shingle underlayment. Selvage the non exposed area on rolled roofing. Designed for nail placement and sealant. 2 a specially defined edge of the material lined for demarcation which is designed for some special purpose such as overlapping or seaming.

The term self finished means that the edge does not require additional finishing work such as hem or bias tape to prevent fraying.