Sealing your splashback is the final step to installing a splashback and perhaps the most important!

If water falls behind, it can create mould, rot and can trap dirt. It's super easy to prevent this is using a Selleys silicone sealant. Check out the tips below.

Beginner Intermediate Advanced
3 Days

What You Need

Easy as..

  1. Remove the old silicone using a sharp knife and then scrape away residual silicone.
  2. Clean and dry the surface with Mineral Turpentine.
  3. Tape both sides of the gap before you begin sealing to ensure a neat finish
  4. Cut the tip of the Selleys Wet Area Silicone cartridge and then cut the nozzle at a 45 degree angle.
  5. Place the cartridge in the caulking gun and fit the nozzle.
  6. With a steady hand, hold the gun at a 45 degree angle and carefully gun the sealant out.
  7. Smooth the sealant with a spatula dipped in detergent
  8. Remove the tape before the seal skins.
  9. Allow to dry for 72 hours.

Handy Tips

  • Clean up excess sealant before it skins with a cloth dampened in mineral turpentine.
  • The sealant will cure fully in 72 hours and you can carefully trim any excess then with a sharp blade.


Selleys Glass Silicone

Get a crystal-clear finish on your glass surfaces with Selleys Glass Silicone. This sealant is perfect for windows, mirrors, and other glass surfaces, and won't yellow over time.


Protect your home from fire hazards with Selleys Flameflex. This sealant is perfect for sealing around pipes and other fire-rated applications, for a fire-resistant barrier.

Paint Over Sealant

For a paintable sealant that won't crack or shrink, choose Selleys Paint Over Sealant. This sealant is perfect for filling gaps and cracks in walls and ceilings.

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.

How to Guides

How To Create a Chopping Board

Make your own chopping board with Selleys. Our guide will show you how to create a custom board that's perfect for your kitchen.

How To Seal a Sink

Achieve a flawless finish in your bathroom or kitchen with Selleys. Our guide will show you how to seal a sink and achieve a clean and watertight surface.

How To Clean Your Kitchen Oven

Get your oven looking new again with Selleys range of powerful cleaning products. Our guide will show you how to clean your oven quickly and easily.