How to tile a bathroom: step-by-step DIY guide

A new bathroom with tiles that suit you: many DIYers take on this job. A bathroom is a wet room, though, so good preparation and a watertight build-up are important. This blog explains what you need, how to work step by step and when to call in a tiler.

⚠️ In a bathroom everything depends on a good, watertight substrate and sealing. If you are unsure about the floor build-up, moisture protection or drains, call in a registered tiler or plumber. A professional is never superfluous.

What do you need to tile a bathroom?

Which materials do you need?

• Tiles for wall and floor, plus tile adhesive and sealing materials as recommended by the tile manufacturer.
• A deep-penetrating primer for the substrate where needed, and grout such as Kerakoll Fugalite Color grout.
• adjustable 4 mm tile spacers or the tile levelling system for even joints and flat tiles.
• sanitary silicone sealant for the corners and the transition to sanitaryware.
• Fila Deterdek Pro cement haze remover to remove cement haze after grouting.

Which tools do you need?

• A Raimondi notched trowel and a Raimondi mortar mixer with a construction bucket.
• A Raimondi Kompass tile cutter for straight cuts.
• A 60 cm spirit level and a tape measure with auto-lock.
• A grout spreader, Raimondi floor sponge and a Raimondi joint scraper.

Which protective equipment do you need?

work gloves with nitrile coating, safety goggles when cutting, FFP2 dust mask against dust and Raimondi knee pads with gel for work on the floor. You can read more about tile tools in our blog on Raimondi tile tools.

Preparation

Check that the substrate is flat, dry, firm and clean. Measure the room, determine the starting line and lay the tiles out dry so that you can plan the cuts. For the substrate and sealing, always follow the tile and adhesive manufacturers' instructions. You can read more about tiling in our blog on tiling a wall and our blog on tiling a floor.

Step by step: how to tile a bathroom

1. Clean the substrate and apply primer where needed.
2. Mark a horizontal starting line with the spirit level.
3. Mix the adhesive in the bucket according to the packaging.
4. Spread the adhesive with the notched trowel over a small area.
5. Place the tiles and press them down; use tile spacers or a levelling system.
6. Cut tiles to size with the tile cutter and check the level regularly.
7. Let the adhesive cure according to the packaging.
8. Grout, clean the tiles with the sponge and remove cement haze.
9. Seal corners and transitions with sanitary sealant; read more in our blog on resealing a bathroom with new silicone.

Common mistakes

• A substrate that is not flat or dry.
• Spreading too much adhesive at once so it skins over.
• Not using a spirit level so rows go crooked.
• Grouting on a wet area, so colour and strength differ.

💡 Plan the last row and the corners in advance. This avoids narrow strips in visible places.

Working safely

Wear glasses when cutting and a dust mask when grinding. Ventilate the room. You can read more about safe working in our blog on safe working on the construction site.

Frequently asked questions

How long does it take to tile a bathroom?

That depends on the size and the preparation. Plan enough time for the adhesive and grout to cure.

Do I need waterproofing?

In wet zones a suitable sealing system is important. Follow the manufacturer's instructions.

Can I lay tiles over tiles?

Sometimes, provided the old tiles are firm and the substrate is suitable. Have this checked.

Which grout colour suits my tiles?

Read our blog on choosing the right grout colour for inspiration.

When do I call in a tiler?

For large-format tiles, doubts about the substrate or if you do not have the time.

Read also: How to repair broken wall or floor tiles and How to clean while tiling

Read also: How to lay tiles diagonally or in a pattern

Read also: Renovating a bathroom: DIY or professional?

Where can you find everything for this job?

At Saniso, the online store for DIYers and professionals, you will find tools, materials and personal protective equipment for your job.

• Browse our construction tools and our workwear and safety.
• Create a customer account and order easily.
• Working on a bigger project or want to hand over the job? Request a project quote.
• Book a showroom visit, at least 24 hours in advance.
• Not sure which material suits your job? Get in touch with us.

In doubt about the approach? Feel free to call in a professional.

Saniso – Build your home with Saniso.