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20/04/2016 10:58

Learn how to grout bathroom tiles

Grouting tiles is a vital skill that makes your bathroom tiles watertight, ensuring your tiles will stay robust and secure on your walls or floor. Good grouting depends on filling the joint between the tiles completely to prevent any water from entering and undermining the structural integrity of your tiled surface.

Man laying bathroom tiles

Grouting is always performed in the same way, whether it’s flooring tiles, wall tiles – no matter what surface, as long as the gaps are filled comprehensively, you’ve done it right.

What tools you’ll need

You’ll need to following tools to grout bathroom tiles effectively: 

Bag of grout

Small mixing bucket 

Mixing trowel



Bucket of water

Grout sealant

How to grout bathroom tiles like a tradesman

Stage one: Mixing the grout

Don’t use premixed grout - this is usually more difficult to use as the consistency can’t be decided manually.

Begin by mixing the grout in the small mixing bucket. Put a little water in the bucket, then pour in the powdered grout and mix together using a trowel. The ratio of water to powder should be indicated clearly on the bag of grout you have purchased, so be careful to stick to these guidelines.

The finished grout should be smooth and have a thick consistency, much like custard (just not as tasty on apple pies). Wait five minutes, then your grout is ready to be used.

Stage two: Grouting the tile joints

The next stage is to apply the grout to the tiled wall or floor. Spread a dollop of grout onto your squeegee, then spread the grout mixture over your tiles firmly, avoiding any air pockets and filling every nook and cranny with grout mixture. Try to keep as tidy as possible and avoid leaving lumps of grout mixture on the wall. 

Once every joint has been filled, leave it for fifteen minutes, then return to clean the tiles.

Don’t leave the job halfway for the day – if the grout mixture dries out and becomes hard it will become a total nightmare to remove and you’ll be creating a lot more work for yourself.

Stage three: Cleaning away the excess grout

Grab your bucket of water and clean away any excess grout from your tiles with a sponge. Don’t overfill your sponge with water, just make sure it’s damp enough to remove the grout from your tiles.

Wait for five minutes, then repeat this process until your tiles are clean. Almost done!

Stage four: Sealing your grout

The final stage of grouting a bathroom is sealing the grout. Sealing the grout helps to support the grout and prevent any water or bacteria penetrating your grout and causing discoloration.

Wait a week before sealing your grout to make sure it’s completely set.

Shake the sealant before use, then carefully go over the grout lines with the sealant. Leave the sealant for cleaning away any excess with a slightly damp mop (if it’s floor tiles) or sponge (for wall tiles). Wipe diagonally across your tiles to avoid removing any sealant from the tile joints.

Now wait for three to four hours (however long indicated by the sealant packaging) and congratulations, you’re done!