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Slabs of slate: drill holes professionally

Introduction: How to work slabs of slate correctly - A guide and the tools you need

Slabs of slate are a versatile and attractive material for a variety of indoor and outdoor applications. Holes often need to be drilled to secure them securely and effectively.

Difficulty: Easy | Costs: approx. 15 euros | Workload: approx. 10 minutes

Image of a slate with a text

In this article we will show you step by step how to professionally drill a hole in a slab of slate.

Materials and tools: the right choice


  • slab of slate
  • water or coolant
  • drilling template (optional)


  • Impact drill or hammer drill
  • Masonry drill, diamond drill or multi-purpose drill
  • Screw clamp or clamping device
  • Protective equipment (goggles, hearing protection, gloves)

Our tip: If you are unsure about which drill bit to choose, we recommend buying a diamond drill bit for the cordless screwdriver . It has the best drilling properties and is guaranteed to let you drill the slab without breakage or damage.

8 mm diamond drill when drilling slabs of slate with a cordless screwdriver

Preparation: Secure the slab and mark the drilling point

  1. Position the slate on a stable and level work surface.

  2. Fix the plate with a screw clamp or a clamping device to prevent slipping during drilling.

  3. Mark the drilling point on the slab with a permanent marker or chalk. A drilling template can be helpful here.

Drilling: step-by-step instructions

Step 1: Prepare drill bit and drill press

  • Use masonry drills or diamond drills in the drill or angle grinder.

  • Reduce the speed of the drill to a low setting to avoid overheating the drill bit.

Step 2: Drilling the Hole

  • Position the drill perpendicular to the slab.

  • Start drilling with light pressure and slowly increase the speed.

  • Apply water or coolant to the drill site while drilling to prevent overheating of the bit and chipping of the shale.

  • After drilling through the slate, slowly stop drilling and carefully pull the drill bit out of the hole.

Step 3: Post-Processing

Conclusion: work on slabs of slate professionally

Drilling holes in slabs of slate requires care and the right approach. With the steps described here, the right materials and tools, you will be able to achieve a professional result.

Remember to wear the necessary protective gear throughout the process and to secure the slate well. This way you can ensure that your drilling is carried out accurately and effectively without damaging the slate or endangering your own safety.

Additional tips for handling slabs of slate

Tip 1: Use the right drilling technique

Be careful not to put too much pressure on the drill or power drill, as this can damage the material and cause cracks. Instead, you should guide the drill evenly and with light pressure to minimize the risk of damage as much as possible.

Tip 2: Clean the drill regularly

While drilling, regularly remove the drill dust to prevent the drill from clogging and overheating. This can be done by briefly raising the bit while drilling or by blowing out the drill hole.

Tip 3: Avoid cracks when drilling near edges

Having to drill near an edge increases the risk of cracking and chipping the slate. To avoid this, the distance between the hole and the edge should be at least twice the hole diameter.

Tip 4: Use appropriate fasteners

In order to fix the slate securely and stably, you should use suitable fasteners. This includes dowels and screws that are tailored to the material and requirements of the slab.

Application examples for slates

Slabs of slate are versatile and offer numerous design options.

Here are some application examples:

  • facade cladding
  • floor coverings
  • kitchen worktops
  • wall coverings
  • garden design

With these tips and the step-by-step instructions, you can drill holes in slabs of slate precisely and professionally. This opens up a wide range of possibilities for you to use slabs of slate professionally in your living room or garden.

The most common questions when drilling a slab hole

1. Which drill is the best for drilling in slabs of slate?

We recommend using a diamond drill bit as it has the best drilling properties and prevents damage or breakage of the slate.

2. How do I keep the slate from slipping while drilling?

You should position the slate on a stable and level work surface and hold it in place with a clamp or clamp.

3. How do I remove burrs or chips from the edge of the hole?

You can remove burrs or splinters with a file or ideally with a diamond burr .

4. What if I need to drill near an edge?

To avoid cracking and chipping when drilling slabs of slab, the distance between the drilled hole and the edge should be at least twice the hole diameter.

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    Jürgen Kleis

    "With my many years of experience in the tool industry, I can give you helpful tips and tricks for DIY and handicrafts".

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