Shower Tray Sizing
Match your bathroom space to standard UK tray dimensions.
Closest Match
No standard tray fits this space.
Consider a bespoke wet-room floor or checking 'European' sizing.
Precise Fit: The UK Shower Tray Guide
Modular Sizing
Choosing a shower tray is about balancing the available floor space with the internal comfort of the enclosure. In the UK, trays are manufactured in specific modular increments (usually 100mm) to match standard glass enclosure sizes.
Our **shower tray calculator** matches your measurements against a database of common UK stock sizes, helping you find the largest possible tray for your space while leaving room for tiling and adjustment.
Common UK Sizes
The 'Bare Stud' Rule
When measuring for a tray in a new-build or renovation, always measure to the **bare wall studs** or brickwork, not the finished plasterboard or tiles. A tray should ideally be fitted before tiling, allowing the tiles to 'sit' on top of the tray.
For the most watertight result, use a tray with 'upstands' (integral lips that sit behind the tiles) or a professional 'tanking tape' system to bridge the gap between the tray and the wall.
Waste Access
Before buying a tray, check your joist direction. If a floor joist runs directly under the waste hole of your chosen tray, you may need to choose a different tray or build a 'plinth' (riser) to lift the tray above the floor.
High-Flow Wastes
Modern power showers and rainfall heads output a lot of water. Ensure your tray waste is a 'high-flow' 90mm model, capable of draining water faster than the shower can fill it.
Pro Tip: The Sand & Cement Bed
Never just place a stone resin tray directly on the floor. Most pros bed the tray on a weak mix of sand and cement. This compensates for any slight unevenness in the subfloor and ensures the tray is perfectly level and won't move, which prevents the silicone seal from breaking over time.
Shower & Enclosure FAQ
Project Disclaimer
Installing a shower tray incorrectly is the leading cause of bathroom water damage. If you are unsure about waste pipe falls or tanking requirements, consult a qualified plumber. Always test the tray for drainage by pouring water into the waste before you start tiling.