Classi Seal
A flexible, permanent waterproofing solution designed to protect shower trays, baths and wetroom floors from leaks. Its self‑adhesive upstand creates a reliable seal that accommodates movement between surfaces.
About Classi Seal
Classi Seal is a pre‑formed flexible sealing strip that bonds to the edge of a shower tray, bath or wetroom base before installation. Once tiled or panelled over, it forms a hidden but highly effective waterproof barrier that prevents leaks caused by movement or expansion.
It is widely used by installers, plumbers and wetroom specialists because it provides a long‑lasting, maintenance‑free waterproof seal that protects vulnerable junctions.
Key Benefits
- Flexible design accommodates movement between surfaces
- Self‑adhesive backing for fast installation
- Creates a permanent waterproof seal
- Ideal for showers, baths and wetroom floors
- Compatible with tiles, panels and waterproof boards
- Prevents leaks at critical junctions
Where Classi Seal Is Used
Shower Trays
Provides a watertight seal between the tray and wall, even if slight movement occurs.
Bath Edges
Stops water escaping behind the bath and causing long‑term damage.
Wetroom Floors
Protects the perimeter of wetroom bases before tiling or panelling.
Wall Panel Installations
Ensures a secure, waterproof junction between panels and trays.
Why Choose Classi Seal?
- Trusted by professional installers
- Simple, fast installation
- Long‑lasting waterproof protection
- Ideal for both new installations and refurbishments
Gallery
Frequently Asked Questions
Is Classi Seal waterproof?
Yes — once installed and tiled over, it forms a permanent waterproof barrier.
Can it be used with wall panels?
Yes. Classi Seal works with both tiles and waterproof wall panels.
Does it require specialist tools?
No — it installs using standard tools and basic preparation.
Is it suitable for DIY?
Yes, provided the tray or bath is installed level and securely.
See Classi Seal in Our Norwich Showroom
Visit our Bowthorpe showroom to explore Classi Seal and other waterproofing solutions. Our team can help you choose the right products for your installation.