Clear Shower Door Threshold Seal Strip for Shower Tray – D510
Clear Adhesive Shower Threshold Bulb Seal Strip – PV29
8mm Self-Adhesive T-Shape Shower Threshold Seal – 13mm Fin | RY3463
10mm Self-Adhesive T-Shape Shower Door Threshold Seal Strip – VH009
Low-Profile Shower Glass Threshold Channel Seal – VG003
Not sure whether you need a bottom seal or a threshold seal?
A bottom seal clips onto the bottom of the shower glass and helps push water back into the shower area. A threshold seal is fixed to the shower tray, bath edge or floor to form a small raised barrier.
If the leak starts directly under the glass, check your bottom seal first. If water continues to travel across the tray or bathroom floor, adding a threshold seal can provide extra protection. For many shower setups, the best result comes from using both together.
Fitting Tip: Using a Threshold Seal with a Bottom Seal
When fitting a threshold seal with a shower door bottom seal, allow the soft fin of the bottom seal to overlap the threshold seal by around 1–5mm.
An overlap of more than 5mm may create too much resistance and make the shower door harder to open or close.
Why Fit a Bottom Seal and Threshold Seal Together?
A bottom seal helps direct water back into the shower, while a threshold seal creates a low barrier on the tray or floor.
When fitted together, they provide better protection against water escaping under the shower door or screen.
Watch the video to see how they work together.
Need to Cut Your Threshold Seal to Size?
Measure the fitting area, mark the seal carefully, then cut it to length using a suitable fine-tooth saw or cutting tool.
Watch our video guide to see how to cut a shower threshold seal before fitting.
Shower Threshold Seal FAQs
Where should I fit a shower threshold seal?
A shower threshold seal is usually fitted to the shower tray, bath edge or tiled floor, just below the shower door or screen.
Do I need a bottom seal as well?
In many cases, yes. A bottom seal helps direct water back into the shower, while a threshold seal creates a low barrier at floor level.
Can I cut a shower threshold seal to size?
Yes, most threshold seals can be cut to length using a suitable fine-tooth saw or cutting tool.