Water on the bathroom floor after every shower. A seal that has shrunk, cracked, or stopped sealing properly. If that sounds familiar, you need a new douchestrip — but with so many types available, finding the right one is harder than it should be.

This guide covers every type of shower door seal, how to measure correctly, and exactly which Minismus seal fits your situation. Use the quick-reference table at the bottom if you want the short answer.

What types of shower door seals are there?

Shower door seals fall into two main categories: bottom seals (bodemstrips) that run along the bottom edge of the door, and side seals (zijstrips) that run vertically along the side of the door frame. Each solves a different leak point.

Bottom seal — water stopper

The most common problem: water escaping under the shower door onto the bathroom floor. A bottom seal — also called a douchestrip met waterstopper — creates a watertight barrier along the floor edge of the door.

The Shower Seal 6–8mm fits glass doors from 6 to 8mm thick and comes as 2×1 metre, so you can cut it to the exact length needed. For thicker glass (8–10mm), use the Shower Seal 8–10mm instead.

If your shower door is curved or quarter-round (kwartronddeur), you need a flexible seal. The Curved Shower Seal is designed specifically for rounded glass door profiles — standard straight seals won't bend enough and leave gaps at the corners.

Side seal — vertical profile strip

Water leaking along the side of the door calls for a vertical side seal. There are three profile shapes, each fitting a different door configuration. Picking the wrong profile means the seal won't close properly.

• D-profile — for straight-closing glass doors. The D-shape compresses against the door frame to create a snug, watertight barrier. See the D-Profile Side Seal 200cm.
• F-profile — for 90° glass-to-glass joints, such as frameless enclosures where two glass panels meet at a right angle. See the F-Profile Side Seal 200cm.
• U-profile — for glass edges that slide into a channel, common in sliding doors and certain pivot doors. See the U-Profile Side Seal 200cm.

Magnetic shower door seal

If your shower door closes magnetically, a standard rubber strip won't work — you need a magneetstrip voor douchedeur. The Magnetic Shower Door Seal (200cm) is designed for 6–8mm glass and provides a firm magnetic closure that eliminates gaps entirely. This is the right choice for pendeldeur and draaideur setups where the door seals itself shut by magnetic attraction.

How to measure for the right seal

Before ordering, you need two measurements. Getting these right is the difference between a seal that works and one you have to return.

1. Glass thickness

Use a calliper (schuifmaat) to measure the thickness of your shower glass at the edge. Most shower glass is 6mm, 8mm or 10mm. This determines which seal fits — ordering the wrong thickness means the seal either won't grip or will stretch open and gap.

• 6–8mm glass → Shower Seal 6–8mm or Curved Shower Seal
• 8–10mm glass → Shower Seal 8–10mm

2. Length of the opening

Measure the full width (for a bottom seal) or full height (for a side seal) in millimetres. All Minismus seals come in 200cm lengths so you cut them to size with a sharp knife or scissors. Always cut a few millimetres longer than measured — you can trim more, you can't add back.

How to replace a shower door seal yourself

Replacing a shower seal takes 10–15 minutes and requires no special tools — just a Stanley knife and some isopropyl alcohol (IPA) for cleaning.

1. Remove the old seal. Pull it out carefully. If it was glued, wipe the residue away with IPA on a cloth and let it dry completely before fitting the new seal.
2. Cut the new seal to length. Measure the opening, add 5mm for margin, and cut cleanly. A straight, clean cut matters — a jagged edge will leave a gap.
3. Insert or press the seal into place. Most bottom seals slide into a channel on the door. Side seals clip or press onto the glass edge. Press firmly along the full length to ensure continuous contact.
4. Test before finishing. Close the door and run water briefly to check for gaps. If the seal bunches or doesn't lie flat in one spot, trim again.

Keep your shower door dry after sealing

Once the seal is fitted, the easiest way to prevent water damage and limescale build-up is to wipe the glass down after every shower. A compact shower squeegee takes less than 30 seconds and removes the standing moisture that slowly degrades seals from the outside. It's the single best habit for extending the life of any new douchestrip.

Quick reference: which seal do you need?

Browse and compare all options in the Shower Door Seals collection.