4"x9" CopperTite Strt Drain

COPPER-TITE features a 2" (51mm) wide band of high density expanding foam tape impregnated with asphalt which is factory applied in a compressed state around the drain outlet.  COPPER-TITE sealant tape is designed to expand to  approximately four times its compressed thickness. Just prior to inserting the  COPPER-TITE drain the installer removes the exterior restraining tape and immediately sets the retro drain in place. The released tape gradually expands to fill the space between the COPPER-TITE drain and the existing drain sleeve making the connection watertight.  COPPER-TITE sealant tape expands more slowly in cold  temperatures.  When heat is applied to the inside of the outlet the sealant tape expands more rapidly.  Should the tape expand too much before inserting the COPPER-TITE drain, simply recompress the tape by hand and then insert the drain.