Classi Waterproofing Seal – Various Sizes

Classi Seal is a self-adhesive waterproof upstand designed to create a secure secondary seal between shower trays or baths and adjoining walls. It helps prevent leaks caused by movement and settlement over time.

The permanently flexible design allows Classi Seal to accommodate vertical movement of up to 15mm while maintaining a reliable watertight seal. This makes it ideal for both new installations and refurbishment projects.

Easy to install, Classi Seal must be fitted to the wall-touching sides of the bath or shower tray before final positioning. The 30mm upstand sits above the tray ledge and is tiled or panelled over for a neat and professional finish.

Suitable for domestic and commercial bathrooms, Classi Seal has become a trusted solution among installers and contractors. Its innovative design helps reduce the risk of hidden water damage behind walls and tiles.

Award-winning and widely specified across the UK and Ireland, Classi Seal is recognised for transforming bathroom installation practices. With an installation time of around five minutes, it offers a quick, practical, and long-lasting sealing solution.