The Classi Classi Seal Waterproof Roll is a flexible product that can accommodate 15mm of movement, making it suitable for new builds, repairs, or renovations. It consists of a flexible upstand made from ethylene propylene diene monomer (EPDM) and a modified butyl rubber adhesive. The EPDM is extruded with an integral antistretch glass fibre reinforcing strip, which aids speed and ease of fitting, and allows for subsequent manipulation in the corners to assist with the tiling operation. The Classi Seal is supplied in a range of lengths and is used in an unbroken, continuous run for sealing shower trays and baths prior to installation.