Measuring, Fitting & Care for Shower Door Seals
Replacing a shower door seal is usually a simple job, but the small details matter. The right seal can still fit badly if the glass is measured incorrectly, the strip is cut too short, the profile is pushed on the wrong way round, or the door itself is slightly out of line.
This section brings together our practical fitting and care guides for shower doors, shower screens and bath screens. Start with measuring before you order, then move through cutting, fitting, common mistakes, alignment checks and everyday care.
Helpful Guides Before You Fit Your Seal
Measuring Before You Replace a Seal
A quick measurement check can prevent a lot of guesswork. Check the glass, the gap and the old seal position before choosing a replacement.
Cutting a Shower Seal Cleanly
A tidy cut helps the seal finish properly at the edge of the door, screen or tray area. Check the tools and cutting methods before trimming a new strip.
Choose the Right Shower Seal Fitting Guide
Replace a Vertical Seal Strip
Helpful if water is escaping from the side of the shower door, between two glass panels, or near the closing edge.
Replace a Over-bath Screen Seal
Best for bath screens where the seal strip fits along the bottom edge of the glass.
DIY Replace Bottom Seal
Use this guide if you replace seal from the bottom of a pivot, hinged, or sliding shower door rather than an over-bath screen.
Fit a Curved Shower Screen Seal
Use this guide if your shower screen or enclosure has curved glass and a straight seal does not sit correctly.
Seal or Reseal a Shower Door
Use this if the leak may be coming from old silicone, frame joints, wall edges, or gaps around the shower enclosure.
Avoid Common Fitting Problems
Bottom or Vertical Seal First?
When more than one seal is fitted to a frameless door, the order can affect how the profiles meet at the corner.
Which Way Round Should the Seal Go?
Some seals look similar from both sides, but the fin, lip or drip edge may need to face a particular direction.
Fitting Mistakes to Avoid
Cutting too short, fitting the wrong profile or pushing the strip on unevenly can all lead to a poor result.
If the Seal Still Does Not Sit Properly
Magnetic Strip Not Working
A magnetic strip may fail to meet properly if the door is out of line, the strip is worn or the replacement is not a close match.
Bi-Fold Door Not Staying Closed
Folding doors rely on moving sections meeting cleanly. Check the closing edge, magnetic contact and door position before replacing more parts.
Misaligned Shower Door
A door that has dropped or shifted can stop the seal from meeting the glass, frame or tray edge correctly.
Keep the Seal Clean and Know When to Replace It
Keeping a Seal in Good Condition
Simple care habits can help reduce staining, stiffness and build-up around the seal.
Door Open or Closed After Showering?
Ventilation affects how quickly the shower area dries after use, which can make a difference to moisture build-up around the seal.
Pink Marks on Shower Seals
Pink staining is usually linked to moisture and bathroom build-up rather than the seal colour itself. Check when cleaning is enough and when replacement may be better.
Signs It May Be Time to Replace the Seal
A seal that is cracked, stiff, loose, yellowed or no longer sitting correctly may be ready for replacement.
Ready to Replace Your Seal?
Once you know which part of the door or screen needs attention, browse our main replacement seal collections by fitting position.
Manufacturing glass shower door seals since 1998
Not Sure How to Measure or Fit Your Seal?
Send us a photo of your existing seal, the door or screen edge, and the gap you are trying to cover. If possible, include the glass thickness and the length you need.
Our team can help you check the likely replacement profile, fitting direction and measurements before you order.