How Much to Cut Quartz Countertop

Quartz countertops have become an increasingly popular choice for kitchen and bathroom remodeling projects in recent years. Made from ground quartz crystals combined with resins and pigments, these engineered stone slabs are valued for their durability, low maintenance, and wide variety of colors and patterns. When it comes time to cut your new quartz countertop to fit your space, there are a few key things to keep in mind.

Measuring and Planning Your Cuts

The first step is to carefully measure the dimensions of your countertop space and map out where you need to make cuts. It’s critical to measure twice and plan your cuts before you start cutting to avoid costly mistakes. Consider the following when mapping out your quartz countertop cuts:

  • Account for the thickness of the slabs – most are 1.2″ thick.
  • Allow space for backsplashes, islands, cooktops, and sinks.
  • Plan seams strategically – minimize visible seams for a seamless look.
  • Add 1/8” overhang to dimensions for edges that won’t be against a wall.
  • Draw out a diagram of all required cuts and measurements.

Having an accurate cutting plan is essential for a perfect fit.

Cutting Options for Quartz Countertops

When it’s time to make the actual cuts, you have a few options:

Wet Saw

A wet saw with a diamond blade is the most common tool for cutting quartz. The water prevents overheating and cools the blade. Make slow, steady cuts with a wet saw to get clean edges. Take safety precautions – wear eye and ear protection.

Angle Grinder

For small trims and intricate cuts, an angle grinder with a diamond blade can be used. Work slowly and carefully – angle grinders can crack or chip the edges. Wear protective gear for safety.

Manual Cutting

It’s possible to cut quartz with a circular saw or jigsaw, but the cuts likely won’t be as smooth and clean. Take it slow and steady. Submerge the cutting line in water to reduce friction and heat.

Professional Fabrication

For DIYers without the right tools, hiring professionals to fabricate and install the countertop is recommended. They have the specialized tools and expertise.

How Much Space to Leave For Seams

Seams are necessary when working with quartz slabs to join sections. Leave a small gap between the edges that will be bonded together:

  • 1/16” gap – best practice for quartz countertops
  • Allows space for adhesives and prevents rubbing/grinding
  • Won’t be noticeable once installed

Take care to make straight, smooth cuts where seams will be located for the best results. Plan seams in less visible spots like near walls or corners.

Cut-Outs for Sinks and Cooktops

The quartz fabrication company can pre-cut sink and cooktop cut-outs before installation. If cutting them yourself, refer to the exact dimensions provided by the sink and cooktop manufacturers and use the following guidelines:

  • Cut-outs should be 1/8″ larger than the sink or cooktop dimensions.
  • Make rounded corners in the cut-out to prevent cracking.
  • Take your time with the cuts and smooth edges carefully with a file.
  • Don’t cut-out the sink area until the countertop is installed.

Careful measurements and expert cuts create a seamless look around sinks and cooktops.

Finishing the Edges

Once your quartz countertop is cut to size, the edges will need finishing. You have options:

  • Polished edge – glossy smooth finish offers a clean, modern look.
  • Bullnose edge – rounded edge has a softer profile.
  • Beveled edge – angled transition from face to bottom has dimensional interest.
  • Ogee edge – elegant indented S-shape design.
  • Dupont edge – square top edge flows into subtle rounded bottom.

The edges can be finished by the fabrication company or you can DIY with a diamond polishing pad. Adding a professional edge creates a seamless, integrated look.

Preventing Cracks and Chips During Cuts

Cutting quartz does come with some risks of cracks and chips if proper care isn’t taken. Here are some tips to prevent damage:

  • Work slowly and gently with sharp cutting tools. Rushed cuts can crack or fracture the slab.
  • Keep the quartz slab fully supported when cutting. Don’t cut unsupported overhangs.
  • Use plenty of water to keep the stone cool while wet sawing.
  • Wear safety gear like eye protection when using power tools.
  • File, sand and smooth all cut edges carefully with 220-grit pads.

By taking your time and following proper cutting techniques, you can get perfect cuts in your quartz.


How thick should quartz countertops be?

The standard thickness for quartz countertops is 1.2 inches. Thicker options like 2 cm (0.8 inches) are available for lightweight budget options, while 3 cm (1.2 inches) slabs provide enhanced durability and strength for heavily used spaces.

Can quartz countertops be cut to size on site?

It is possible for quartz countertops to be cut and fabricated on-site during installation. However, it is often preferable for quartz slabs to be cut and fabricated at the shop in advance whenever feasible. Professional shops have specialized tools to ensure precise cuts.

What blade should be used to cut quartz?

It’s essential to use a diamond blade designed for cutting stone when cutting quartz countertops. Diamond blades stay cool and prevent the quartz from overheating. Wet saws with diamond blades are the most common cutting tool for quartz fabricators.

Does quartz need to be sealed after cutting?

No, quartz does not require sealing. Since quartz countertops are non-porous, sealing agents cannot penetrate the surface. Quartz also resists staining and etching without a sealant. Avoid using sealers which can create glossy blotchy spots on your countertop.

Can quartz countertops be cut with a circular saw?

While it’s possible to cut quartz with a circular saw, it won’t produce cuts that are as smooth and precise as professional wet saws. Manual cutting with a circular saw should only be done if you do not have access to a wet saw. Take precautions to keep the quartz cool and cut slowly.


Cutting quartz countertops to create a custom fit requires careful planning, patience, the right tools, and techniques. Measure precisely, allow for seams and overhangs, use wet saws or angle grinders, cut sink openings after installation, finish edges smoothly, and take it slow to get professional results. With some basic knowledge of how much to cut quartz and the proper preparations, you can achieve a beautifully flawless quartz countertop installation.