How to reseal your bath

If the seal around your bathtub is looking a bit worse for wear, it’s simple enough to fix yourself. Instead of forking out for a paid professional to come and do the job after lockdown, take the opportunity to do it yourself. It is a quick job and will not take more than an afternoon to finish.

How to reseal your bath

Nothing will ruin your relaxing bath time more than seeing uneven sealant around the edges.

Over time, sealant can rot away, which not only can ruin the look of a polished bathroom but can also lead to leaks.

To reseal your bath, you will need:

  • Sealant remover
  • Fresh sealant
  • Cartridge gun
  • Safety gloves


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Start by applying sealant softener, which can be bought from any good DIY store, and leave to dry for 10 to 15 minutes.

Remove the sealant with a plastic scraper or Stanley knife, taking every care not to scratch or damage your tub.

It should come off easily, but make sure to scrape off any excess. Scrub the area using a household bathroom cleaner and leave to dry.

Next, you should fill the tub with water, which will ensure that the sealant will not crack when the bath is used later.


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Filling the bath will also ensure the gaps between the tiles and tub are at their largest.

Insert the sealant cartridge into the gun and cut the nozzle off at the end so that its size corresponds with the gap to be filled.

Sit on the edge of the bath and press the trigger to apply the sealant to the gaps in one smooth movement – taking care not to overfill.

Once applied, the sealant can be smoothed with a wet round-ended tool (like the handle of a wooden spoon or spatula), or a wet fingertip.

Shape the sealant at an angle. This will help it to shed water as it does its job.

The final step is to remove any excess sealant with white spirit before it dries and becomes hard.

Leave to dry according to the instructions on the cartridge before you go ahead and empty the bath.

Now you can enjoy a nice, relaxing soak in a freshly sealed tub.

Tip: If you have never used one before, practice using the cartridge gun by following a line on a piece of paper before progressing to the tub.

Why should you seal a bath? writes: “If you have a straight bath in your home – the most common type of bathtub in the UK – chances are that it is installed against at least one wall.

“As baths contain large volumes of water, they are prone to leaking or water flowing over the edge.

“If this water gets down the side and underneath the tub, and collects on the floor, it can lead to flooding, rotting and a building-up of mould – which can bring health risks and hefty repair costs.

“Another reason to seal or reseal a bath is to give your bathroom a quick spruce up.

“Tired-looking sealant can drag the visual appeal of a washroom down, so a smooth sealant is a simple bathroom refresh without breaking the bank.”

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