Selvage Roofing Definition

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

Selvage roofing definition.

2 a specially defined edge of the material lined for demarcation which is designed for some special purpose such as overlapping or seaming. A narrow border often of different or heavier threads than the fabric and sometimes in a different weave. The edge on either side of a woven or flat knitted fabric so finished as to prevent raveling specifically. Area does not tie into any other roofs.

1 an edge or edging that differs from the main part of a fabric granule surfaced roll roofing or cap sheet or other material. Shingle mate gaf s shingle underlayment. An edge as of fabric or paper meant to be cut off and discarded. The term self finished means that the edge does not require additional finishing work such as hem or bias tape to prevent fraying.

In woven fabric selvages are the edges that run parallel to the warp and are created by the weft thread looping back at the end of each row. Shed roof roof design of a single roof plane. Breather type with fiberglass backing to reduce wrinkles and buckles. Designed for nail placement and sealant.

Selvage the non exposed area on rolled roofing.