The strip is revolutionary in design not just because it has a fleece-free pink tinged surface (a) that provides a tenacious adhesion with 100% silicone, but the strip is also reversible making it a versatile sealing solution that can be installed either during or after the installation of tubs and shower pans with and without tile flanges attached.
When the strip is installed to seal a shower base or bathtub with an integral tile flange, the pink tinged siliconized surface of the strip faces the tile flange. When the strip is installed to seal a shower base or bathtub with no tiling flange, the red tinged surface faces the installer.