Classi Classi Seal Waterproof Roll is 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 also allows for subsequent manipulation in the corners to assist with the tiling operation. This product is suitable for new build, repair, or renovation and is used in an unbroken, continuous run for sealing shower trays and baths prior to installation. It is available in a range of lengths and is ideal for use by tradespeople and DIY enthusiasts.