26 September 2006
EVA. Family of copolymers of ethylene and vinyl acetate used for adhesives and
thermoplastic modifiers. They possess a wide range of melt indexes.
Fabric. A woven cloth of organic or inorganic filaments, threads, or yarns.
Fabrication. (1) The manufacturing process performed in a plant to convert raw
material into finished metal building components. The main operations are cold-forming,
cutting, punching, welding, cleaning, and painting; (2) the creation of large panels of
rubber from smaller calendar width sheets as in EPDM.
Fascia. A decorative trim or panel projecting from the face of a wall, serving as a
weather closure at gable and endwall.
Felt. A flexible sheet manufactured by the interlocking of fibers through a combination
of mechanical work, moisture, and heat, without spinning, weaving, or knitting. Roofing
felts are manufactured from vegetable fibers (organic felts), glass fibers (glass fiber
felts) or polyester fibers (synthetic fiber mats).
Fiberglass insulation. Blanket insulation, composed
of glass fibers bound together
with a thermoset binder, faced or unfaced, used over or under purlins to insulate roofs
and walls; semi-rigid boards, usually with a facer.
Field. The "job site," "building site," or general market area.
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 or counterflashing shields the upper
edges of the base flashing.
Flood coat. The top layer of bitumen used to hold the aggregate on an aggregate
surfaced roofing membrane.
Fluid-applied elastomer. An elastomeric material, fluid at ambient temperature, that
dries or cures after application to form a continuous membrane. Such systems may not
Galvalume. Trade name for steel coated with aluminum-zinc alloy for corrosion
Galvanized steel. Steel coated with zinc for corrosion resistance.
Glass felt. Glass fibers bonded into a sheet with resin and suitable for impregnation in
the manufacture of bituminous waterproofing, roofing membranes, and shingles.
Granule. See Mineral Granules.
Gravel. Coarse, granular aggregate, with pieces larger than sand grains, resulting from
the natural erosion of rock.