Shower Door Bottom Seals
Find the right shower door bottom seal to help reduce water leaking under your shower door.
Start with two quick checks: your glass thickness and the gap under the glass.
Not sure which seal fits? Send us a photo on WhatsApp.
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Once you know your glass thickness and bottom gap, use the filters below to narrow products by door type and seal profile.
Common bottom seal profiles include fin seals, sweep seals, side-fin seals, brush-style seals, bulb seals and U-channel bottom seals for sliding doors, pivot and hinged doors, frameless doors and bath screens.
4–6mm Glass Shower Door Bottom Seal with Side Fin Small Gap Seal S456DTL
4-6mm Glass Shower Door Bottom Seal 5mm Fin V456S5
4–6mm Glass Double-Fin Shower Door Bottom Seal 9mm Fin VB456
Shower Door Bottom Seal Strip for 4–6mm Glass 8mm Fin V456S8
Shower Door Bottom Seal Strip for 4–6mm Glass – 12mm Fin V456S12
4–6mm Glass Shower Door Bottom Seal 16mm Fin V456S16
For 4-6mm Glass Shower Door Bottom Seal 17mm Fin VD456
4–6mm Glass Shower Door Bottom Seal 20mm Fin V456S20
4–6mm Glass Shower Door Bottom Seal 23mm Fin V456S2023
4–6mm Glass Offset Shower Door Bottom Seal 18mm Fin VC456
Bubble Shower Door Seal for 4–6mm Glass – 6mm Gap D456S7
Large Bubble Shower Door Seal for 4–10mm Glass Up to 11mm Gap D410S12
Bottom Bubble Shower Door Seal for 4–6mm Glass Up to 15mm Gap DA456S15
6-8mm Glass Offset Edge Shower Bottom Seal 16mm Fin VC8
8mm Shower Door Bottom Seal with Side Fin Small Gap Seal S8DTL
10mm Glass Shower Door Bottom Seal with Side Fin Small Gap Seal S10DTL
8mm Glass Double-Fin Shower Door Bottom Seal 9mm Fin VB08
10mm Glass Twin-Fin Shower Door Bottom Seal Fin 9mm VB10
8-10mm Glass Shower Door Bottom Seal 5mm Fin V810S5
Shower Door Bottom Seal Strip for 8-10mm Glass 8mm Fin V810S8
8–10mm Glass Shower Door Bottom Seal 12mm Fin V810S12
8–10mm Glass Shower Door Bottom Seal 16mm Fin V810S16
8–10mm Glass Shower Door Bottom Seal 20mm Fin V810S20
8–10mm Glass Shower Door Bottom Seal – 23mm Fin V810S2023
Factory-Direct Bottom Shower Door Seals Since 1998
Since 1998, SIMBA has specialised in shower door seal manufacturing. Our factory-direct supply helps us control profile shape, material flexibility and replacement support for leaking shower screens.
Bottom seals can look similar online, but small differences in glass thickness, fin length, seal height, and gap size can affect the fit.
Not sure which bottom seal fits? Send us your glass thickness, gap size and a photo of your old seal on WhatsApp. We’ll help you choose the best match before you order.
How to Choose the Right Shower Door Bottom Seal
Choose in this order: glass thickness first, then the gap under the glass, then the seal profile or door type.
Choose by Glass Thickness
- 4–6mm glass For thinner shower screens and many bath screen setups.
- 8–10mm glass For thicker frameless, pivot and hinged shower doors.
- 12mm glass Used for thicker or specialist glass panels.
Choose by Bottom Gap
Measure with the door closed, from the bottom of the glass to the tray or floor. If the gap varies, use the larger measurement.
Small gaps usually need a shorter fin. Larger or uneven gaps may need a longer flexible fin or side-fin profile.
Choose by Door Type
- Sliding doors Side-fin seal may work better.
- Frameless doors and bath screens U-channel and bottom fin seals are commonly used.
- Pivot and hinged doors Fin and sweep seals are often suitable.
- Uneven gaps Longer flexible fins or side-fin
How to Measure Before Ordering
Measure glass thickness
Measure the exposed glass edge with a ruler or caliper. Common UK sizes include 4mm, 5mm, 6mm, 8mm and 10mm.
Measure the bottom gap
Close the door and measure from the bottom of the glass to the tray or floor. If the gap is different at each end, use the larger measurement.
Not sure which bottom shower seal you need?
If your shower door is old, has no model number, or the original bottom seal is no longer available, send us photos before ordering.
We’ll check the seal profile, glass thickness and fitting position to help you find the closest suitable replacement.
How Our Bottom Shower Door Seals Help Stop Leaks
A bottom shower door seal fits along the lower edge of the glass to help guide water back into the shower tray. Depending on the design, it may use a flexible fin, sweep or drip profile to improve the seal at the base of your shower screen.
For the best fit, choose a seal that matches your glass thickness, the gap under the glass and the way your door opens. If the fin is too short, water may still escape. If it is too long, it may drag on the tray or stop the door from closing smoothly.
Most bottom shower door seals can be trimmed to length and pushed onto the glass without glue, making them a simple replacement for worn, cracked or leaking shower screen seals. All our bottom shower door seals are quality checked before dispatch, so you can choose a clean, reliable replacement with confidence.
Brilliant service and product
Thank you very much for tending with detailed attention and professionalism to the little issues/hiccups throughout this delivery process. Much appreciated.
Stephane B.
Brilliant service - so impressed.
This has been a fantastic service in a Sunday. Simba advice and recommendation has been excellent (a Sunday). Huge thanks
Jeremy F.
Perfect replacement bifold door seal
Had a rubber bottom strip deteriorated on a my shower bifold hinge section between the two doors, couldn’t find a replacement from the manufacturer (Coram, Optima) as doors were so old. Took a chance as the ‘T’ seals are the same measurement. Fitted perfectly, really happy.
Gerry K.
Frequently Asked Questions
1. How do I choose the right bottom shower door seal?
Start with two measurements: your glass thickness and the gap under the glass. Then compare the side profile of your old seal with the product images. A small difference in channel width, fin length, or seal shape can affect the fit.
If you are unsure, send us a photo of your old seal, glass edge, or leaking area before ordering.
2. What is the best bottom shower door seal to prevent leaks?
The best option depends on where the water is escaping. For most pivot and frameless shower doors, a flexible fin or drip rail bottom seal is usually the first option to check. For very small gaps, choose a slim side-fin or adhesive threshold seal. For sliding doors, check track clearance before fitting a bottom side-fin seal.
For more severe leaks, combining a bottom seal with a D510 water deflector or PV29 shower threshold seal can provide extra protection. You can also check our shower door leaking solutions guide.
3. What is the rubber strip at the bottom of a shower door called?
4. Why is my bottom shower seal still leaking?
A bottom shower door seal may still leak if the seal type does not match your door, the fin is too short, the bottom gap is uneven, or the shower door is not aligned correctly. In some installations, a bottom seal alone may not be enough, especially if there is no threshold strip to help contain and redirect water.
Before choosing a replacement, measure the gap under the glass, compare the side profile of your old seal, and check whether your shower setup needs both a bottom seal and a threshold strip.
5. Are bottom shower door seals universal?
6. What makes SIMBA bottom shower door seals different?
SIMBA has specialised in shower door seal manufacturing since 1998. Our factory-direct supply chain gives us better control over profile accuracy, material flexibility, and replacement support.
We also help customers identify hard-to-match seals from photos, especially for older shower screens or discontinued shower door profiles.
7. Do I need to order a sample first?
In most cases, no. Shower door bottom seals are chosen by glass thickness, gap size and profile shape.
If you are unsure, send us a photo of your current seal along with your measurements, and we’ll help you choose the closest suitable replacement before you place your order.