How to Choose the Right Shower Door Seal
Start with where the old seal was fitted. Then check whether the glass moves, measure the glass thickness and gap, and compare the profile before choosing a replacement. Use the guides below to narrow down the correct seal without needing the original brand or part number.
Start Here if You Do Not Know the Seal Type
Start with the main seal types and see where each one is normally fitted.
Choose by Fitting Position
Choosing a Side or Vertical Seal
For gaps at the side, wall, frame or closing edge.
Choosing a Magnetic Closing Seal
For doors that close edge-to-edge with magnets.
How to Choose the Right Shower Threshold Strip
For water deflectors fitted to the tray or bath edge.
Choosing a Seal for an L Shaped Shower Screen
Identify the correct replacement seal for L shape screen by fitting position, glass arrangement and panel movement.
Measure Before You Choose
Glass Thickness
Check the glass thickness before choosing a push-on, side or magnetic seal.
Bottom Gap
Measure the gap under the glass before choosing a bottom seal or fin depth.
Side Gap
Check the side gap before choosing a vertical, bulb or magnetic seal.
Check Fit and Special Cases
Right Profile, Wrong Size?
A slightly different fin length or fitting size does not always mean you need another seal. Check what can be adjusted before choosing again.
Push-On vs Self-Adhesive Seals
Compare when a seal should grip the glass edge and when an adhesive strip is better suited to a tray, threshold or fixed flat surface.
When a Push-On Bottom Seal Will Not Fit
Check what to do when there is not enough clearance beneath the glass to fit a push-on seal, and whether the door really needs to be removed.
Why Universal Seals May Not Fit
Universal seals are not truly one-size-fits-all. Check the profile, glass thickness, gap size and fitting position before choosing one.
Compare Seal Profiles and Fin Styles
Single Fin or Double Fin?
Compare single-fin and double-fin profiles before choosing a replacement for your door position and clearance.
Is a Longer Fin Always Better?
A longer fin may drag, fold or affect door movement if there is not enough clearance.
When to Choose a Bulb Seal
Bulb profiles are not usually the best fit for the bottom edge. Check when a sweep-style profile is more suitable.
Should a Bulb Seal Go on the Bottom Edge?
A bulb seal can work in some bottom-edge situations, but it is not always the best choice.
Why Curved Glass Needs a Different Seal
A straight seal may leave gaps or fail to grip properly on curved shower glass. Here’s what to check before replacing yours.
Compare Materials and Replacement Options
Polycarbonate or PVC?
Compare clarity, flexibility, durability and yellowing resistance before choosing a replacement.
Can a Standard UK Seal Replace a Branded Part?
Check when a standard UK profile is a suitable match, and when an exact original part may be safer.
Check Seal Quality Before You Buy
Look at material, grip, flexibility and finish before choosing a replacement seal.
Browse Seals by Type
Ready to compare replacement seals? Browse our main seal collections by fitting position and profile.
Manufacturing glass shower door seals since 1998
Still Not Sure? Send Us a Photo
We’ve manufactured glass and shower door seals since 1998, including bottom seals, side seals, magnetic closing seals and threshold profiles.
Send us a photo of your existing seal, plus your glass thickness and gap size, and we’ll help you choose a suitable replacement before you order.