How to Drill an Anchor into a Silestone Quartz Countertop

Drilling into your beautiful Silestone quartz countertop can seem daunting, but with the right tools and techniques, you can securely anchor items without damaging the surface. Here is a step-by-step guide on how to drill an anchor into Silestone quartz.


Silestone is a popular brand of engineered quartz countertops valued for their stylish appearance, durability, and low maintenance. Quartz is an incredibly hard material composed of ground natural stone and resins, making it more scratch and stain-resistant than other countertop materials.

While this hardness makes Silestone more durable, it also means it can be tricky to drill into without cracking or chipping the surface. However, with patience and by following a few important steps, you can drill clean holes to mount fixtures like soap dispensers, paper towel holders, and other accessories.

What You Need

  • Safety goggles
  • N95 dust mask
  • Electric drill
  • Hammer
  • Center punch
  • 1⁄4 inch carbide tipped masonry drill bit
  • Bottle of water
  • Rags
  • Anchors appropriate for your accessory

Step-by-Step Guide

1. Select the Location

Pick an inconspicuous area of the countertop away from edges or seams for drilling. Check below to make sure you will not hit plumbing or wiring.

2. Mark the Spot

Use a marker to indicate the exact spot for drilling. Making a guide hole first with a center punch allows the drill to stay straight and not wander.

3. Prepare the Surface

Place a rag under the marked spot to prevent scratching. Soak the spot with water before drilling to keep dust down and cool the bit. Reapply water as needed while drilling.

4. Drill the Pilot Hole

Put on safety goggles and a dust mask. Using light pressure, drill slowly into the quartz using a 1⁄4 inch carbide tipped masonry bit, keeping the drill plumb and steady. Quartz powder will be produced.

5. Widen the Hole

Enlarge the pilot hole in increments with successively larger masonry bits until reaching the needed width for anchors. Clear away dust and reapply water. Go slow and keep the drill straight.

6. Vacuum and Clean

Remove all dust from the hole and countertop. Wipe down with a rag dampened with a stone cleaner or mild soap and water.

7. Install the Anchor

Follow the directions provided with your anchors. Tap gently with a hammer if needed to insert the anchor without cracking the quartz.

8. Attach the Accessory

Once anchored, carefully install your accessory. Take care not to over tighten screws.

And that’s it! With the right preparations and tools, you can now have stylish and functional accessories mounted securely onto your Silestone quartz countertops.

FAQs about Drilling into Silestone Quartz

How big of a hole can I drill in my Silestone quartz?

For most anchors, a 1⁄4 inch hole is sufficient. Wider holes up to 1⁄2 inch can be drilled, but take extra care by moving up bit sizes incrementally.

What type of drill bit should be used?

Special carbide tipped masonry drill bits are required for drilling through the hard quartz material. Regular steel bits are likely to become damaged or ineffective.

Can I drill near the edge or seams?

It’s best to avoid drilling too close (within a few inches) of any edges or seams which could weaken the integrity or lead to cracks.

Is there an alternative to drilling holes?

Adhesive mounts are an option for some light accessories, though provide less strength than a screw anchor. Always check weight limits before relying on adhesive.

Should I use a drill guide for straight holes?

A simple center punch indent followed by going slow with a quality carbide bit while maintaining pressure is usually adequate for keeping the drill straight.

What can I do if the drill bit gets stuck?

Turn off the drill and saturate the area with water. Let the dust soften for a few minutes. Start again slowly and gently, keeping the bit lubricated.

How can I get a smooth finish around holes?

Use a stepped approach when widening holes. Finish off edges with a file or sandpaper. Apply caulk around anchors for a seamless look.


Drilling holes into hard Silestone quartz countertops is made much easier by using the proper masonry drill bits and techniques. Marking a center punch guide hole, keeping the surface wet, and drilling slowly helps prevent cracking. Widen the hole incrementally and use anchors designed for stone. With care and patience, you’ll gain stylish new functionality. Follow these tips and you can successfully add accent pieces that coordinate perfectly with your beautiful Silestone quartz countertops.