Last updated: 7 January 2026
Picked up a new curved shower screen seal? Great choice. Here’s the quickest, most reliable way to fit it.
Video: Fitting Your Curved Shower Seal
There are many ways to do this, but this is the simplest method for a "proper job."
1. Out with the Old
- Old seals are usually brittle and covered in grime.
- Grip the soft fin and give it a firm pull!
- Don’t worry about breaking it—it’s headed for the bin anyway.
2. Prep the Glass
- Scrub away any leftover limescale or mould.
- A clean edge is vital for a watertight, professional-looking seal.
3. Fit the New Curved Seal
Start at the inner edge (nearest the hinges/rollers). We’ll fit the whole length first, then trim it back.
Hook the U-channel onto one corner. Top Tip: Use your thumb to slightly widen the opening—it makes sliding it onto the glass much easier.
Note: "Opening up" the channel is far easier than trying to force it straight on.
Work your way around the curve, pressing it on inch by inch. Take your time—if you skip a bit, the ends won't line up correctly.
Why do other seals pop off?
Most UK quadrant showers require an 800mm radius curve. Many generic brands sell "flat" seals (1300mm radius) that struggle to stay bent, causing them to spring off or crack.
Understanding the Curve:
- SIMBA (800mm): Tighter, natural curve for UK showers.
- Generic (1300mm): Too flat. High tension causes leaks.
"I tried soaking it in hot water, but it still didn't fit..." — Avoid the frustration. SIMBA’s pre-curved design fits without the fuss.
4. Trimming to Size
Standard seals are 950mm long, so you’ll likely have some excess. Fit first, cut later!
Once the seal is pressed on, mark the excess with a pen. Pull just that small end off the glass to make your cut.
Pro Advice: Use garden secateurs for a clean, effortless snap. If using scissors, score the PVC first. Always cut with the U-channel facing up to keep the structure rigid.
5. Level Up: Add a Threshold Seal
Is a bottom seal enough? If you want a 100% dry floor without worrying about every splash, pair your seal with our PV29 Threshold Bar.
This stick-on bar is designed specifically for curved enclosures. It bridges the gap where the hinges meet the seal—the most common spot for "nuisance leaks."
Tip: Once installed, leave it to cure for 10 hours before showering for the best grip.
6. Job Done!
Firmly in place? Leak fixed? Enjoy your dry bathroom.
Wait! Avoid these common mistakes:
- Skip the Soap: Lubricants or fairy liquid can actually feed mould growth and make the seal slide off later.
- Watch the Heat: Avoid cleaning with water over 70°C. If you have a sauna, use our specialised sauna seals instead.
- No Hairdryers: Excessive heat ruins the "memory" of the PVC, causing it to lose its grip on the glass.
Still seeing drips? Check our guide on fixing corner leaks.
