| Designed to manage the movement of
commercial and industrial building roof systems. Thermal. Settlement. New and existing
junctions. Differing roof deck materials or direction. Seismic movement. Expand-O-Flash expansion joint covers are flexible,
weatherproof, exterior covers for expansion joint openings and are an effective, flexible
closure for a wide variety of standard and special applications. Each Expand-O-Flash cover
is a combination of a flexible rubber membrane, supported by a closed cell foam to form
flexible bellows, with two metal flanges, adhesively and mechanically combined to the
bellows by a patented bifurcation process.
Flexible rubber membranes are available in
white or black 60 mil EPDM, and black 60 mil Neoprene. Black EPDM is recommended for
budget installations. White (sold at a premium) is used where color is important. However,
white does not have the longevity of black. Neoprene is more expensive, and is recommended
for use where exposure to process oils or animal fats is an issue.
Metal flanges are available in galvanized
steel (26 ga), mill finish aluminum (0.032"), stainless steel (0.018") and
copper (16 oz). Galvanized is recommended for budget installations. Aluminum is
recommended for areas where longer exposure to severe elements is required. Stainless
steel is effective on manufacturing facilities where corrosion could effect longevity of
the metal. Copper is used to match other copper metal work.
Selected metals are available on special
order including lead coated copper, Terne-coated stainless, Kynar coated 24 gauge
galvanized, and .032" aluminum and others.
Closed cell foam thickness varies in
thickness from 3 /8" to 3 /4" depending on bellows width.
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