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StopGap Acoustical Sealant is a highly elastic, water-based sealant
used for reducing sound transmission at the perimeter of wall systems
or around electrical box cutouts to achieve specified STC/MTC values.
The surface dries to a tough film but the sealant remains flexible and
stays pliable for up to 5 times longer than alternative brands. And
unlike other products, Stop-Gap has no residual run-off. StopGap is
paintable and nonstaining, and meets ASTM C-834 standards for flame
retardancy.
StopGap comes in a large, 29 oz caulking tube and therefore requires
a larger than normal-sized caulking gun, which can be purchased at any
local hardware store. Coverage per 29 oz. cartridge is approximately 40
linear feet with a 3/8 inch bead applied.
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