Whether you're hanging a towel rack in the bathroom or installing an outlet in the kitchen, drilling into tiles requires precision. Ceramic tiles and natural stone are hard and brittle, increasing the risk of cracks. In this blog, we explain how to safely drill into tiles and what tools you truly need.
What type of tile do you have? (Ceramic vs. natural stone)
Before you start drilling, it's important to know what material you're working with.
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Ceramic tiles: These are fired and often have a hard glaze layer. They are very hard (especially porcelain stoneware), making a diamond drill bit essential.
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Natural stone: Materials like marble or granite are more irregular. Granite is extremely hard, while marble is softer but can chip more easily. With natural stone, constant water cooling is even more important to prevent discoloration due to heat.
What do you need?
Before you begin, it's essential to gather the right materials. Never use a standard masonry drill bit for hard floor or wall tiles.
- Tile drill bit: for soft wall tiles, a universal tile drill bit is sufficient. For hard floor tiles (porcelain stoneware), you'll need a diamond drill bit.
- Cordless drill: use a machine where you can control the speed yourself.
- Painter's tape: helps prevent the drill bit from slipping.
- Cooling: a plant sprayer with water (for wet drilling) or a drill bit with cooling wax.
Safety first
Drilling into ceramic or natural stone creates small, razor-sharp shards and fine dust. Always wear:
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Safety glasses: To protect your eyes from flying glaze.
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A dust mask: Especially when dry drilling, fine dust is released that you don't want to inhale.
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Work gloves: For a good grip and hand protection.
Step-by-step safe drilling into tiles
Step 1: Preparation
Determine where the hole needs to be. Use a pipe detector to check if there are any electrical or water pipes behind the tile. Then, apply a cross of painter's tape to the drilling spot. This prevents the drill bit from slipping and scratching the glaze.
Step 2: The correct drill setting
Never set your drill to hammer drill or impact drill mode. The vibrations from the hammer function will immediately crack the tile. Drill at a low, constant speed.
Step 3: The drilling process
Position the drill bit perpendicular to the tile. Start drilling slowly without applying too much pressure. Let the drill bit do the work. Is the drill bit getting hot? Continuously cool the spot with a little water. This significantly extends the lifespan of your diamond drill bit.
Step 4: Through the tile
As soon as you feel you've gone through the hard tile and reached the wall (brick or concrete), stop immediately. Now switch the tile drill bit for a standard masonry or concrete drill bit to further deepen the hole in the wall. This prevents your expensive tile drill bit from unnecessarily wearing out on the concrete.
What to do if it still goes wrong?
Despite all precautions, has a crack appeared? If the crack is small, you can sometimes camouflage it with a special tile repair kit in the right color (wax). Is the damage greater? Then the only real solution is to replace the tile. Tip: Always order 10% extra tiles, so you always have a spare from the same batch for such accidents.
