A new bathroom vanity can instantly update the aesthetics of your home and add value!

Learn how to install one at your place with this step by step guide

Beginner Intermediate Advanced
48 Hours

What You Will Need

  • Selleys Wet Area Silicone (select the colour that best suits your vanity top
  • Bathroom vanity and tapware of your choice
  • Mineral Turpentine
  • Stud finder
  • Hole saw
  • Cordless drill
  • Spirit level
  • Caulking gun
  • Blade or knife
  • Silicone scraper or spatula
  • Soft clean cloth


Step 1: After a plumber has disconnected the plumbing, remove the old vanity from the wall and dislodge any remaining sealant with the scraper. Selleys Silicone Remover will help.

Step 2: Use the stud finder to locate and clearly mark your timber wall studs. These will be used to affix and stabilise your vanity unit later on. Carefully mark and cut your pipe holes into the back of the vanity using a hole saw. These are for the water outlets. 

Step 3: Move the vanity unit into position, using the spirit level to ensure it’s flush.

Step 4: Drill into the timber wall studs and attach cabinet screws. These will need to be at both the top and bottom of the vanity unit to ensure it’s secure. 

Step 5: Assemble your tap ware according to the manufacturer’s instructions before affixing it to your vanity unit. Your plumber can assist with this part. 

Step 6: Use your Selleys Wet Area silicone to steadily apply a thin bead of silicone all the way around the top edge of the cabinet. 

Step 7: Place your sink base on top of the cabinet, slide it against the wall and press it firmly into place so the silicone sets in the right position. Allow it to set for a few hours.

Step 8: Once completely set, have a licensed plumber connect the water pipes and tapware.

Step 9: To protect the cabinet from any water damage you’ll need to seal the gap between the sink base and the wall. Use a clean cloth to wipe down any excess dust from the area ensuring that its completely dry. Then apply a thick, even bead of  Selleys Wet Area silicone to the gap.

Handy Tips

  • Clean and dry surfaces of oil, dirt and grease with turps and then Methylated Spirits. Allow to dry completely before applying silicone.
  • Using silicone to fix the vanity top onto the cabinet allows wiggle room. Once it’s completely dry, it won’t move.
  • When first applying product, extrude a small amount onto a piece of scrap material to ensure a smooth continuous flow of silicone sealant.
  • Use a spatula dipped in detergent and water to tool off the sealant.


Wet Area Silicone

Keep your wet areas mould-free with Selleys Wet Area Silicone, a superior waterproof and mould resistant seal that will not shrink, crack or peel away.

Silicone Remover

Remove old sealant quickly and easily with Selleys Silicone Remover. This powerful formula breaks down old sealant, making it easy to remove and to prepare surfaces.

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