How to apply bathroom sealant

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How to apply bathroom sealant

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Project Overview

It’s important to seal the joins in your bathroom tiles with silicone to prevent moisture getting behind your tiles. We show you how to prepare the area and apply the silicone. 

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Finish silicone

To give silicone a smooth finish, some people use a bit of saliva on the end of their finger. Then six months later they wonder why their silicone has started to go mouldy. The bacteria in your mouth will happily grow in silicone, which creates those darks stains. To get a smooth finish that won’t discolour, use a wet rag dipped in fresh water instead.

Step by Step Instructions

1 Prepare the tile surface
2 Cut the silicone nozzle
3 Apply the silicone along the join
4 Make a smooth silicone join
  • Step 1. Prepare the tile surface

    Before you start, give your tiles a good clean. You want to make sure the area is clear of any dust or debris around the tiles. 

  • Step 2. Cut the silicone nozzle

    Cut the silicone nozzle at a 45° angle so that the silicone runs smoothly along the surface of the join. In this case, we are using a grey coloured silicone along the base to match the floor tiles and a white silicone up the wall to match the wall tiles.

  • Step 3. Apply the silicone along the join

    Put your silicone container into the caulking gun. Apply the silicone generously along the join, starting from the centre and working your way out.  

  • Step 4. Make a smooth silicone join

    Once you have applied the silicone, spray the area with water. Then run the end of popsicle stick along the join to smooth it over. If any clean up is required use turpentine or a silicone remover to take away excess silicone.

Tools and Materials

Tools

  • Caulking gun

Materials

  • Popsicle sticks
  • Rag
  • Silicone – grey and white
  • Turpentine or silicone remover
  • Water in a spray bottle
  • 5

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Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.
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