How to Cut a Quartz Countertop


Quartz countertops have become increasingly popular in kitchens and bathrooms due to their durability, aesthetics, and low maintenance. While quartz is an engineered stone made from natural materials like quartz aggregates and resins, it can still be cut and fabricated like natural stone. Cutting a quartz countertop yourself is possible with the right tools and techniques. This guide will walk you through the key steps for how to cut a quartz countertop.

Gather the Necessary Supplies

Cutting quartz requires specialized diamond-tipped blades and tools to avoid chipping or cracking the stone. Here’s what you’ll need:

  • Diamond-bladed wet saw – Make sure it’s designed for stone cutting. A 7-9″ continuous rim diamond blade with 0.5-1″ segments works best.
  • Marker – To mark your cut lines. Use a permanent marker that won’t wipe or wash away.
  • Straight edge – A straight piece of wood or aluminum works well as a guide for marking straight cuts.
  • Safety gear – Safety glasses, ear protection, gloves, and a dust mask. The dust from cutting quartz is silica-based and harmful to inhale.
  • Denatured alcohol – Used for cleaning and prepping the surface.
  • Rags – For wiping down the countertop before and after cutting.
  • Silicon carbide sandpaper – In 80-150 grit for smoothing cut edges.

Measure and Mark the Cut Lines

First, precisely measure and mark where you need to make the cuts using your straight edge and marker. Make sure your lines are straight and accurate. For corners and notches, mark with triangles.

It helps to lay painter’s tape along the cut lines to prevent the marker from bleeding. Double check all your measurements before starting to cut.

Set up Your Work Area

Cut quartz outside or in a well-ventilated garage or workshop. The cutting will produce a lot of silica dust. Wear your safety goggles, respirator mask, and other protective gear at all times.

Make sure your saw is on a flat, stable surface and plugged into a GFCI outlet. Adjust the saw to cut completely through the slab’s thickness. Have the denatured alcohol and rags nearby to prep and clean the surface.

Cut the Quartz

Wet the countertop surface along the cut lines to minimize dust. Carefully line up your marked cut lines with the saw blade. Keep water flowing over the blade and quartz throughout the cut.

Make slow, steady passes with the saw, avoiding sudden movements that can crack the slab. Let the blade do the work. Apply only light pressure.

Make multiple shallow passes if needed, gradually working through the full depth. Stay aligned along the cut lines for straight cuts.

Smooth and Finish the Cut Edges

Once cut, carefully wipe any debris and excess moisture from the countertop. Smooth any rough spots along the cut edges using the silicon carbide sandpaper, moving in one direction.

Avoid over-sanding, as you don’t want to thin the edges excessively. Clean the sanded edges well when done.

Seal the exposed quartz with a penetrating quartz sealer to prevent staining and etching. Allow the sealer to cure fully before installing the countertop.

Safety Tips

  • Wear proper safety equipment at all times when cutting quartz. The dust contains hazardous silica particles.
  • Work carefully to avoid slips or contact injuries from the saw blade. Pay full attention, don’t rush, and keep fingers away from the blade.
  • Prevent damage by not applying too much pressure and maintaining control when cutting.
  • Double check all measurements first and ensure your saw is at the right depth before starting cuts.

Following safe practices and techniques will allow you to successfully cut quartz for custom countertop installations. With patience and care, DIYers can cut their own quartz to achieve perfect seams and professional results.

Frequently Asked Questions

Can I cut quartz countertops myself?

Yes, it’s possible for a DIYer to cut quartz countertops on their own with the proper tools, mainly a diamond-bladed wet saw designed for stone cutting. Safety precautions need to be taken due to the silica dust produced.

What type of blade do I need to cut quartz?

You’ll need a continuous rim diamond blade that is designed specifically for cutting stone. A 7-9 inch blade with 0.5-1 inch segments usually works best for quartz. Make sure you use a wet saw to keep the dust down.

How thick are quartz countertops?

Quartz countertops are typically 1.25 inches thick. Thicker options like 1.5 inches are also available. The slab needs to be thick enough not to crack or break when cut and installed.

Can I cut quartz with a circular saw?

It’s not recommended. A circular saw doesn’t have water flowing over the blade to minimize dust, plus controlling the cuts precisely is more difficult. You’ll get cleaner, smoother cuts using a specialized wet saw.

What’s the best way to cut corners and notches in quartz?

Mark the areas to be cut out very precisely using triangles. Take your time and make multiple passes to gradually cut the quartz out for corners or notches. Trying to cut out too much at once can crack the slab.


Cutting a quartz countertop yourself takes the right preparation and technique, but it can be done DIY-style. By following safe cutting procedures and using the proper wet saw with a diamond blade, you can achieve straight, smooth cuts in a quartz slab. Just remember to wear protective gear, make shallow passes, and smooth the cut edges once you’re done cutting. With care and patience, you can cut quartz countertops to exact specifications.