If taking a shower leaves your bathroom floor wetter than your shower recess, it's likely you have a leak!

Luckily there's an easy fix - and with Selleys No Mould, you can be back using your shower within an hour.

Beginner Intermediate Advanced
1 hour

What You Need

How to Guide

  1. Remove the old sealant by pushing the knife deep inside the join and running it down the length of the seal. The sealant should peel away in long pieces, exposing the join. If it’s difficult to remove, you might want to try Selleys Silicone Remover (follow the instructions on the pack).
  2. Use a cloth soaked in mineral turpentine to clean the newly exposed join area, ensuring all traces of the silicone has been removed then wipe the area dry.
  3. Protect the glass screen from silicone with a strip of tape running down its length. Make sure you don’t cover the join though! Do the same for the tile side of the wall.
  4. Cut the Selleys Wet Area Silicone or Selleys No Mould cartridge tip and place in the caulking gun. Attached the nozzle to the cartridge and snip the nozzle at a 45 degree angle.
  5. Pump the gun until the silicone just begins to emerge, then apply evenly to the join in a downwards motion starting from the top of the shower screen.
  6. Use the spatula dipped in some soapy water (round corner), to clean up uneven areas and ensure the silicone is applied deeply to the join. Wash the spatula with some soapy water between touch ups.
  7. Remove tape from wall and screen immediately after smoothing the sealant, then clean up the area with a cloth dampened with mineral turps. You’ll have about 5 minutes to do this before the silicone begins to skin.
  8. If using Selleys No Mould, the sealant will have a firm skin and will be waterproof and shower ready just 1 hour after application. The semi-cured sealant must not be touched until fully cured (48 hours). If using Selleys Wet Area Silicone, the sealant should be allowed to fully cure (72 hours) before returning shower to use.


Handy Tips

  • Clean and dry surfaces of oil, dirt and grease with mineral turpentine and then methylated spirits. Allow to dry completely before applying silicone. If old silicone needs to be removed, simply apply Selleys Silicone Remover and the old silicone can be removed easily after 2 hours
  • Tape both sides of the gap before applying the product. This ensures a neat finish and makes it easier to clean up
  • When first applying product, extrude a small amount onto a piece of scrap material to ensure a smooth continuous flow of silicone sealant
  • Remove the tape before the silicone sealant skins
  • Use a spatula dipped in mineral turps or detergent and water to tool off the sealant
  • Work in sections that can be completed before sealant skins.


Selleys No Mould Silicone Sealant

Selleys No Mould Silicone sealant creates a long-lasting waterproof seal that prevents mould growth. Suitable for use in humid and damp environments, it’s ideal for kitchens, bathrooms, laundries, showers, tiles and plumbing fixtures. For interior use only. *Sealant will be waterproof and shower ready in 1 hour after application in showers. The semi-cured sealant must not be touched until fully cured (at least 48 hours) *To maintain your sealant properties, ensure you regularly clean off any soap scum and dirt as these encourage mould growth *Not suitable for aquariums, food or drinking water contact, permanent immersion in water, or metals other than aluminium and stainless steel. Not suitable for PE, PP, PTFE and some rubbers. Pre-test on other surfaces for compatibility. Suitable for - Ceramic, Glazed & porcelain fixtures, Aluminium, Plastic laminates, Some rubbers, Glass, Stainless Steel

Selleys Wet Area Silicone

Selleys Wet Area Silicone Sealant delivers a superior waterproof and mould resistant seal that is ideal for use in bathrooms, kitchens and laundries.

Selleys Rapid Mould Killer 750ml

Selleys Rapid Mould Killer is a fast acting mould killer. Its powerful formula destroys mould and eliminates 99.9% of germs. Selleys Rapid Mould Killer will leave tiles and grout sparkling clean with minimal effort.

How to Guides

How To Seal a Sink

Getting a proper seal around your sink prevents water penetration. Here’s the best way to ensure a complete seal around your sink area to make it easier to clean and less prone to water damage and discolouration. And all without the need for a caulking

How To Transform Kitchen And Bathroom Surfaces

Kitchen and bathroom renovations can be costly, not to mention time consuming – but an outdated kitchen or bathroom can also be an absolute eye sore and hindrance if you are looking to sell!