How to seal grout

How to seal grout

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  • Always apply in small sections at a time.
  • Start from the top of the wall and finish with the base and floor.
  • Try to prevent spilling any liquids or getting any dirt or contaminates on the grout lines for a full 24 hours after sealing them.
  • Do no apply sealer below 10°C.
  • Always ensure that there are no puddles of sealer left in the grout lines. Too much sealer may cause discoloration of some grout types.
  • Look at the tiles from different angles to ensure that there is no sealer residue or sealer haze left on the tile surfaces.
  • If applying to existing grout, clean surfaces with Selleys White For Life Tile & Grout Cleaner. Clean mould affected surfaces thoroughly with Selleys Rapid Mould Killer and allow to dry, before applying sealer.

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You’ll need:


  • Ensure grout has dried for at least 3 days before applying sealer.


1. Ensure surface is clean. Using the scrubbing brush and dustpan, remove any debris from dried grout line.
2. Push the clear plastic lock on trigger clockwise to the open position. Spray liberally onto grout, saturating the surface. Allow to penetrate grout for 1 hour.
How to seal grout 2.1 How to seal grout 2.2
3. Wipe off overspray from face of tiles, using a clean white cloth or paper towel.
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4. Apply a second coat of sealer for maximum protection. Ensure that this overspray is wiped off within 2 hours of application to prevent sealer drying on the tile surface.
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5. Allow to dry for at least 24 hours before exposing sealed grout to water on shower walls.
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6. Re-seal grouted surfaces every 12 months for ongoing protection.

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