It is a self-adhesive, flexible up-stand Shower and Bath Seal that is attached to the side walls of a shower tray, bath or worktop. AquaStrap is designed to be an easy-fit installation offering a waterproof, leak free solution, allowing for joint movement between wall and floor. A neat joint of silicone sealant is maintained between the ledge and bottom edge of the tile.
Read the Aquastrap FAQ here