Replace a shower door seal or sweep strip

Swap a worn shower door seal for a new one to stop leaks, using basic care and no tools.

SD-01Check the seal type and take measurementsLook at how the old seal fits: some clip onto the edge of the glass, others slide into a track on the frame. Measure the length needed along the door edge, and check the glass thickness (usually 4mm, 5mm, 6mm or 8mm), as seals are made for specific thicknesses. If you can, take a small offcut of the old seal with you to match it exactly in the shop.

1 each · Tape measure

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SD-02Buy the right replacement sealShower door seals come in different profiles: a sweep strip for the bottom, a vertical seal for the side, or a magnetic strip for bi-fold doors. Match the profile, length and glass thickness to your old seal. Buy from a bathroom shop, hardware shop, or order online using your measurements.

1 each · Replacement shower door seal

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SD-03Clear the area and protect the trayRemove mats or towels from the shower tray so you have clear access to the door. Lay an old towel across the tray to protect it and catch any drips or old sealant scraps.

1 each · Old towel

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SD-04Remove the old sealPull the old seal away from the glass edge or track by hand; most are held on by friction alone. If it's stiff, gently prise one end up with a plastic scraper or your fingernail, then peel it along the length. Don't use a metal blade close to the glass, as it can scratch it.

1 each · Plastic scraper

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SD-05Clean the glass and channelWipe away old sealant residue, soap scum and limescale with a cloth and a limescale remover or white vinegar. Rinse and dry the edge thoroughly; a wet or greasy edge stops the new seal gripping properly. While it's clear, check the channel or glass edge for cracks or damage.

1 bottle · Limescale remover or white vinegar

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1 each · Cloth

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SD-06Fit the new sealStarting at one end, press the seal onto the glass edge or slide it into the track, working along the full length. Push it on firmly so it seats evenly and isn't twisted. Trim any excess with sharp scissors or a craft knife if the seal is slightly too long.

1 each · Craft knife or scissors

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SD-07Test the door and check for leaksClose the door and check it swings or slides freely without catching on the new seal. Run the shower for a minute with the door closed and check outside the tray for water escaping. Adjust the seal's position slightly if water is getting through.

SD-08Tidy upDispose of the old seal and any offcuts, wipe down the shower area, and remove the towel from the tray. Keep any leftover new seal in case you need a small repair later.

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