How to Grout Tiles

Choosing the Right Grout

Wall tiles in kitchens and bathrooms: use unsanded grout for joints under 3mm. Floor tiles or joints over 3mm: use sanded grout for strength. For shower enclosures, use an epoxy grout for maximum water resistance.

When to Grout After Tiling

Allow tile adhesive to cure for at least 24 hours before grouting. For floor tiles, wait 48 hours. Grouting before adhesive has cured can cause the tiles to shift or the grout to crack.

Removing Tile Spacers

Remove all tile spacers before grouting. They can be pulled out by hand or with a small screwdriver. Grout will not adhere properly over plastic spacers.

Mixing and Applying Grout

Mix grout to a smooth paste with the consistency of peanut butter. Apply diagonally across the tile joints using a rubber grout float, pressing firmly to fill joints completely. Work in sections of about 1 square metre.

Cleaning Off Excess Grout

After filling joints, use a barely damp sponge to wipe off excess grout in a circular motion. Rinse the sponge constantly. Clean the haze with a dry cloth before it fully sets.

Sealing Grout

Once grout has cured for 48-72 hours, apply a grout sealer to protect against staining and moisture penetration. This is especially important in showers and around kitchen sinks. Reapply sealer annually.