Dictionary

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Click one of the letters above to be taken to a page of all terms beginning with that letter.
f
Fascia

A "face" board installed along the eaves of a roof.

Felt

A flexible sheet manufactured by the interlocking of fibers through a combination of mechanical work, moisture and heat. Felts are manufactured principally from vegetable fibers (organic felts), asbestos fibers (asbestos felts) or glass fibers (glass fiber felts); other fibers may be present in each type.

Fiber glass mat

A reinforcing material for asphalt roofing manufactured from glass fibers.

Fishmouth

(1) A half-cylindrical or half-conical opening formed by an edge wrinkle; (2) in shingles, a half-conical opening formed at a cut edge.

Flashing

The system used to seal membrane edges at walls, expansion joints, drains, gravel stops, and other places where the membrane is interrupted or terminated. Base flashing covers the edges of the membrane. Cap flashing or counterflashing shields the upper edges of the base flashing.

See also: Base Flashing, Cap Flashing
Flashing Cement

A trowelable mixture of cutback bitumen and mineral stabilizers, including asbestos or other inorganic fibers.

Flat Roofing

A waterproof roofing membrane that can be composed of many kinds of materials such as rubber, plastic, tar, asphalt, silicone, urethane and hybrids of all of these. Flat roof membranes are designed for roofs with slopes of less than 3/12.