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.

1. Shop by glass thickness
4–6mm glass 8–10mm glass
2. Shop by bottom gap
No gap Under 9mm 9–12mm 13–16mm 17–20mm 20mm+
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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.

Shower door bottom seal with clear threshold seal preventing water leaks on a glass shower door

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64 products

Cross-section close-up of the VH010 framed shower door drip rail, showcasing the transparent soft PVC with a unique 4mm wide T-shaped top and an 8mm compact sweeping fin, optimized to snap into wider framed door base tracks for efficient water channelling and leak prevention.Technical dimension diagram for a framed shower door bottom seal, detailing the 4mm T-leg width, 8mm fin height, and overall profile, providing critical specification data for users needing an exact match for 4mm wide grooves who require only short-reach coverage.

4mm Framed T-Bar Seal 8mm Fin VH010

£29.88
£43.19 £29.88
10mm self-adhesive T-shape shower door threshold seal strip VH009Technical dimension diagram for VH009 T-seal showing 10mm width and 10mm fin length

10mm Self-Adhesive T-Shape Shower Door Threshold Seal Strip – VH009

£29.88
£43.19 £29.88
Cross-section close-up of the VH003 shower door sweep framed, showcasing the transparent soft PVC with a unique 6mm extra-wide T-shaped top and an 11mm long sweeping fin, optimized to lock securely into non-standard wider base tracks of framed doors for reliable water channelling and leak prevention.Technical dimension diagram for a framed shower door seal replacement, detailing the rare 6mm T-leg width, 11mm fin height, and overall profile, providing critical specification data for users needing an exact match for extra-wide 6mm grooves who are seeking a durable replacement solution.

6mm Framed T-Bar Seal 11mm Fin VH003

£29.88
£43.19 £29.88
Cross-section close-up of the VH002 framed shower door bottom sweep, showcasing the transparent soft PVC with a unique 6mm extra-wide T-shaped top and a 15mm long sweeping fin, optimized to lock securely into non-standard wider base tracks of framed doors for reliable water channelling and leak protection.Technical dimension diagram for a framed shower door seal strip, detailing the rare 6mm T-leg width, 15mm fin height, and overall profile, providing critical specification data for users needing an exact match for extra-wide 6mm grooves who require mid-length coverage to cope with slightly uneven floors.

6mm Framed T-Bar Seal 15mm Fin VH002

£29.88
£43.19 £29.88
Cross-section close-up of the VH001 shower sweep for framed door, showcasing the transparent soft PVC with a unique T-shaped top, a 3mm insertion width, and 10mm overall height, optimized to snap into standard grooves at the base of framed shower doors for a tight waterproof barrier.Technical dimension diagram for a bottom seal for framed shower door, detailing the 3mm T-leg width, 10mm fin height, and overall profile, providing critical specification data for replacement projects requiring an exact match for 3mm grooves in door frames.

3mm Framed T Shape Seal 10mm Fin VH001

£29.88
£43.19 £29.88
Shower Frame Gasket 35mm Extra-Wide Gap VL002Shower Frame Gasket 35mm Extra-Wide Gap VL002

Shower Frame Gasket 35mm Extra-Wide Gap VL002

£29.99
£43.19 £29.99
Cross-section close-up of the VI005 shower door seal for framed door, showcasing the transparent soft PVC with a unique double 7mm T-shaped top design (dual legs), paired with a 15mm long sweeping fin, optimized to fit into extra-wide grooves or dual-track sliding door systems for superior stability and leak protection.Technical dimension diagram for a framed shower door sweep, detailing the rare spacing of the double 7mm T-legs, 15mm fin height, and overall profile, providing critical specification data for users needing an exact match for complex track structures who are seeking a robust locking solution.

15mm Fin Double 7mm T-Bar Shower Door Bottom Seal VI005

£29.88
£43.19 £29.88
Cross-section close-up of the VI004 framed shower door replacement drip rail with vinyl sweep, showcasing the transparent soft PVC with a unique 3mm wide T-shaped top and a 15mm long sweeping fin, optimized to snap into framed door base tracks to channel water and prevent overflow.Technical dimension diagram for a framed shower door seal strip replacement, detailing the 3mm T-leg width, 15mm fin height, and overall profile, providing critical data for users needing an exact match for 3mm grooves who require longer coverage than standard 10mm seals.

Slimline 3mm T-Bar Seal Fin 15mm VI004

£29.88
£43.19 £29.88
Cross-section close-up of the VI003 designed to replace integral rubber seal on plastic framed bath screen, showcasing the transparent soft PVC with a unique double T-shaped top and a rare 32mm extra-long sweeping fin, optimized to fit into aged, widened plastic or metal tracks and cover significant floor gaps for superior leak prevention and stability.Technical dimension diagram for a framed shower door drip rail and sweep, detailing the spacing of the double T-legs, the total 32mm fin height, and overall profile, providing critical specification data for users needing an exact match for special dual-track structures who require extreme length to cope with severely uneven floors.

10mm T Shape Framed Shower Door Replacement Fin 32mm VI003

£29.88
£43.19 £29.88
8mm Framed T-Bar Seal 17mm Fin VH0138mm Framed T-Bar Seal 17mm Fin VH013

8mm Framed T-Bar Seal 17mm Fin VH013

£14.88
£43.19 £14.88
6mm Framed T-Bar Seal 21mm Fin VH0126mm Framed T-Bar Seal 21mm Fin VH012

6mm Framed T-Bar Seal 21mm Fin VH012

£14.88
£43.19 £14.88
5mm Framed T-Bar Seal 22mm Extra Long Fin VH0115mm Framed T-Bar Seal 22mm Extra Long Fin VH011

5mm Framed T-Bar Seal 22mm Extra Long Fin VH011

£14.88
£43.19 £14.88
Specialist Shower Frame Channel Seal 7mm Width VL005Specialist Shower Frame Channel Seal 7mm Width VL005

Specialist Shower Frame Channel Seal 7mm Width VL005

£29.88
£43.19 £29.88
Glass Edge Protection & Frame Infill Strip VL004Glass Edge Protection & Frame Infill Strip VL004

Glass Edge Protection & Frame Infill Strip VL004

£14.88
£43.19 £14.88
Bottom Seal For Framed Shower Door 12mm Width RY5306Bottom Seal For Framed Shower Door 12mm Width RY5306

Bottom Seal For Framed Shower Door 12mm Width RY5306

From £3.48
£43.19 From £3.48
Low-profile shower glass threshold channel seal VG003Engineering drawing of VG003 showing the rigid low-profile adhesive base and dimensions

Low-Profile Shower Glass Threshold Channel Seal – VG003

£29.99
£38.70 £29.99

Buy the Right Seal First Time

Send us your measurements and a photo for help choosing.

Quality Checked Before Dispatch

Every bottom seal is checked before shipment.

Free Next Day UK Delivery

Fast delivery across the UK.

Manufacturer Since 1998

Experienced shower seal production.

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. We’ll help you choose the best match before you order.

Send Us a Photo
Seal Selection Guide

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.

No gap Under 9mm 9–12mm 13–16mm 17–20mm 20mm+

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

Still unsure? Send us a photo before ordering.
Measuring Guide

How to Measure Before Ordering

1

Measure glass thickness

Measure the exposed glass edge with a ruler or caliper. Common UK sizes include 4mm, 5mm, 6mm, 8mm and 10mm.

2

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.

?

Need more detail?

Read our full shower screen seal measuring guide

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.

Find a Seal for an Old Shower Door
Shop Replacement Shower Door Bottom Seals

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.

⭐ Customer Reviews for Shower Door Bottom Seals

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.

RELATED GUIDES

Related Guides for Shower Door Bottom Seals

Practical advice to help you choose, install, and maintain the right seal for your shower door.

Uneven Shower Door Gap? Here’s How to Fix It

If your seal doesn’t sit evenly, standard options may not work. Learn how to fix uneven gaps and choose a better-fitting solution.

Fix uneven gaps →

Complete Guide to Shower Door Bottom Seals

A full overview of seal types, sizes, and how to choose the right fit for your shower setup.

Read guide →

Why Is My Shower Door Leaking at the Bottom?

Understand the common causes of leaks and how to stop water escaping onto your bathroom floor.

Fix leaks →

How to Replace a Shower Door Bottom Seal

A simple step-by-step guide to removing your old seal and fitting a new one properly.

See steps →

Single Fin vs Double Fin Shower Seals

Compare different designs and find out which works best for your water pressure and gap size.

Compare →
FAQ

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?
It is usually called a shower door bottom seal, bottom shower seal, shower screen bottom seal, bottom sweep, or shower door gasket. These seals fit along the bottom edge of the glass to help reduce water escaping onto the bathroom floor.
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?
No. Bottom shower door seals are not fully universal. They vary by glass thickness, channel shape, fin length, gap coverage, and door type. A seal that looks similar online may still be too loose, too tight, too short, or too long for your shower door.
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.