How to Cut Quartz Countertop at Home

Quartz countertops are popular choices for kitchen and bathroom remodels thanks to their durability, visual appeal, and easy maintenance. While quartz is remarkably strong, there may come a time when you need to cut your quartz countertop to fit a particular space or design. With proper planning and the right tools, it is possible to cut quartz countertops yourself at home.

What You’ll Need

Cutting quartz countertops is a big project that requires specialized equipment for a clean cut. Here’s what you’ll need:

  • Quartz wet saw – A must-have for accurately cutting quartz. Look for a saw with a diamond-tipped blade designed for cutting stone.
  • Safety gear – Wear eye and ear protection as well as an N95 mask to protect from silica dust.Closed-toe shoes and gloves are also recommended.
  • Tape measure and pencil – For accurately marking your cut lines.
  • Silicon carbide sandpaper – For smoothing cut edges.
  • Sealant – To seal exposed quartz edges so they are waterproof. Use a color-matched sealant.

Planning Your Cuts

Cutting quartz requires careful measurements and planning:

  • Measure twice, cut once. Double check all measurements before making cuts.
  • Account for the blade thickness. The blade will take away about 1/8 inch.
  • Cut quartz face down. This helps minimize chipping.
  • Support long pieces. Long overhangs can crack without support. Use plywood or a helper to support.
  • Mark cut lines clearly. Use masking tape and mark your measurements. This helps guide the cut.

Cutting the Quartz Countertop

Once you’ve prepped your workspace and marked your measurements, you’re ready to make the actual cuts:

Step 1: Turn on Saw and Adjust Water Flow

  • Turn on the saw and allow the blade to reach full speed.
  • Adjust the water flow so a consistent stream is flowing over the blade. This keeps the blade cool.

Step 2: Make Several Light Passes

  • Make several gradual passes over your cut line before going all the way through the quartz.
  • Let the blade do the work. Don’t force it.
  • Go deeper with each pass until you cut through the quartz.

Step 3: Check for Precision

  • Make sure your cut is perfectly straight using a square ruler.
  • If the cut is slightly off, make another pass to correct it.
  • Cuts should be precise since you can’t sand quartz edges like natural stone.

Smoothing the Edges

Once cut, the edges will be sharp and may have some chips. Here’s how to smooth and finish them:

  • Use 150-grit silicon carbide sandpaper to gently smooth cut edges.
  • Wipe away quartz dust with a wet sponge as you sand.
  • Apply sealant to the exposed quartz edges using a small foam brush. Allow to dry completely.
  • A light buff with 00-steel wool can help remove any leftover dried sealant.

With the proper tools and safety precautions, these steps will allow you to accurately cut your quartz countertop at home. Just remember to double check all measurements first and let the saw blade do most of the work. Patience and caution will reward you with a flawless finished cut.

FAQs About Cutting Quartz Countertops at Home

Can I cut quartz countertops with a circular saw?

No, a circular saw is not recommended. You need the water-cooled diamond blade of a wet saw to cut quartz cleanly without cracks or chips.

What kind of blade do I need to cut quartz?

Use a diamond-tipped blade specifically designed for cutting stone and quartz. This will provide a smooth, accurate cut.

What speed should I cut quartz at?

Cut quartz slowly and steadily without forcing the saw blade. Most wet saws will cut quartz effectively between 900-1800 RPM.

Can any sealant be used on cut quartz edges?

No. You must use a sealant made specifically for quartz and stone. Color-matched sealants provide the best invisible finish.

What causes chips and cracks when cutting quartz?

Forcing the blade and not making gradual passes is the main cause of chips and cracks. Failing to support long edges can also lead to cracks.

How thick can my home quartz saw cut?

Home wet saws can generally cut 1.5 inches of quartz thickness easily. Thicker cuts may be possible but require more blade passes.


With the right preparations and tools like a specialized quartz wet saw, cutting a quartz countertop at home is an achievable DIY project. Always double check measurements, follow safety precautions, support the quartz slab adequately, and let the diamond-tipped blade do the hard work. Patience and multiple light passes will reward you with perfectly smooth edges that can be sealed for a flawless professional finish.