How to Seal a Bath

An unsealed bath can lead to water leakage, mould and rotting.

It is important to make sure the edge of your bath is properly sealed otherwise water can leak down between the bath and the wall, resulting in flooding, mould and rotting of the joists. One of the most effective ways to seal the gap is by using a silicone sealant, such as Everbuild Forever White Silicone. Following these simple steps will ensure your sealant is applied correctly and will be effective and last.

Step 1: Removing Old Sealing

This can be done by applying Everbuild Silicone Eater and scrapping off the sealant using the blade of a craft knife, being careful not to scratch the bath surface. Once the sealant has all been scraped away wipe the surface clean with acetone (nail polish remover) to ensure the surface is absolutely clean.

Step 2: Fill the Bath

Some baths give slightly when they are used. Filling the bath with water will ensure the gap is maximised and the new sealant will not then be stretched when the bath is in use.

Step 3: Apply Masking Tape

Apply a line of masking tape above and below where the sealer will be applied. This will give a much neater finish.

Step 4: Prepare the Sealant Nozzle and Load Gun

To determine how much of the nozzle needs to be cut off, measure the gap to be sealed and cut the nozzle accordingly. Cutting the nozzle at a slight angle will allow it to be kept tight against where the two surfaces meet. Then puncture the tip of the cartridge carefully with a sharp knife and screw on the nozzle back on. The sealant can then be loaded into a Caulking Gun; a pump for squeezing silicone out of a tube. You are now ready to seal!

Step 5: Applying the Sealant

Apply the sealant to the gap in a continuous line. Try to do it in one smooth movement. Smooth the sealant using a wet fingertip within 10 minutes of application. For best results, shape the sealant or bead at an angle as this will help shed water.

Carefully peel off the masking tape and remove excess sealant using white spirit before it dries. Leave the sealant to cure for 24 hours before using the bath.

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