How Thick is Typical Quartz Countertop?

Quartz countertops have become an increasingly popular choice for kitchen and bathroom remodeling projects in recent years. With a style and color to fit nearly any design aesthetic, durability to withstand years of use, and easy maintenance, it’s no wonder quartz has become a top contender against natural stone and laminate. When selecting quartz for your next countertop installation, an important consideration is the thickness you choose. Here is an overview of the typical quartz countertop thickness options and factors to keep in mind when deciding which is right for your space.

What is the Standard Thickness for Quartz Countertops?

The most common thicknesses for quartz countertops fall between 3/4 inch to 1 1/4 inches. Within this range, 1 1/4 inches is generally considered the standard thickness for most quartz countertop installations. However, thicker options up to 2 inches are available from some manufacturers as well.

Here is an overview of the typical slabs thicknesses:

  • 3/4 inch – The thinnest option available. Only recommended for applications where support is not a concern, such as on walls.
  • 1 inch – Provides functionality but is prone to warping or sagging without proper support. Best for projects on a tight budget.
  • 1 1/4 inches – The most popular and recommended standard thickness for quartz countertops. Provides adequate strength and durability for most applications.
  • 1 1/2 inches – A slightly thicker option than standard, provides additional sturdiness and support. Ideal for heavy use areas.
  • 2 inches – The thickest option. Provides maximum strength and minimal sagging. Great for expansive installations like large islands.

What Are the Factors to Consider for Quartz Thickness?

When selecting the right thickness for your quartz countertop, there are a few important factors to take into account:

Application Area

Consider the space where you plan to install the quartz. Kitchen countertops often benefit from a thicker slab than other areas like bathrooms or wet bars. High traffic spots like a kitchen island or dining space warrant thicker quartz as well.

Span Length

The distance between supporting base cabinets or pilasters underneath the countertop impacts the thickness you’ll need. Longer spans call for thicker slabs to prevent sagging or cracking over time. Most manufacturers recommend 1 1/4 inches for spans up to 54 inches. Go thicker for anything beyond that distance.

Overhang Length

If your countertop design calls for any extended overhang on bar orvanity areas with no support underneath, opt for a thicker quartz thickness to accommodate this. 1 1/4 inches or more is best for overhangs over 6-8 inches.


Quartz pricing often correlates to thickness, with thicker slabs costing more due to increased materials. If cost is a primary concern, 1 inch may be the better choice over standard 1 1/4 inches.

What Are the Benefits of a Thicker Quartz Countertop?

Going with a thicker quartz slab comes with several advantages:

  • Prevents sagging or cracks – The additional thickness provides enhanced strength and durability to avoid bending, warping, or cracks over time. This is especially important on expansive installations.
  • Supports longer spans – Allows you to have fewer supports underneath while resisting sagging across longer distances between base cabinets or pilasters.
  • Minimizes discoloration – With a thicker material, the quartz is less prone to showing alterations over time from spills, scratches, and use.
  • Adds visual appeal – A thicker countertop can provide a substantial, luxurious look and feel. The added depth is more reminiscent of natural stone.
  • Decreases noise – Extra thickness helps dampen sound from dishes, appliances, etc. improving the ambiance of the space.

What thickness of quartz countertop should I choose?

For most standard applications, 1 1/4 inches offers the best combination of strength, functionality, and value for quartz countertops. Here are some general thickness recommendations based on use cases:

  • Standard kitchen countertops – 1 1/4 inches
  • Heavy use kitchen islands – 1 1/2 inches
  • Bathroom vanities – 1 inch or 1 1/4 inches
  • Shower or tub surrounds – 3/4 inch
  • Fireplace mantels or wet bars – 1 1/4 inches
  • Outdoor kitchens – 1 1/2 inches or thicker

Be sure to consult with your countertop supplier about lead times and pricing for various thicknesses. This will help ensure you get the right balance of durability, performance, and cost for your specific quartz countertop installation. With the proper thickness chosen, you can enjoy beautiful, functional quartz countertops that will last for many years to come.

Frequently Asked Questions about Quartz Countertop Thickness

How thick are most kitchen quartz countertops?

Most kitchen quartz countertops are either 1 inch or 1 1⁄4 inches thick. 1 1⁄4 inches is generally recommended as the minimum thickness for kitchen countertops to provide adequate strength and durability.

Is a 1-inch quartz countertop thick enough?

While 1 inch quartz countertops are available, they are prone to warping or cracking over time, especially on longer spans or with overhangs. Most experts recommend going with 1 1⁄4 inches or thicker for kitchen countertops for stability.

Should I get 1 1⁄4 or 1 1⁄2 inch quartz?

For most kitchens, 1 1⁄4 inches is sufficiently thick. Go with 1 1⁄2 inch quartz if you have a large overhang or need to span a longer distance between supports. This added thickness minimizes chances of sagging or cracks.

Is 2-inch quartz too thick for a countertop?

Two-inch quartz countertops are not necessarily too thick, but are often overkill for most residential applications. The extra thickness adds cost and weight. Consider 2 inches only for expansive islands or other heavy use areas that require the additional durability.

Does quartz thickness affect price?

Yes, a thicker quartz slab typically costs more due to the increased materials involved. Most suppliers quote quartz countertops by the square foot based on thickness. Expect 1 1⁄4 inch quartz to run 10-20% more than 1 inch, for example.


When it comes to quartz countertop thickness, aim for a minimum of 1 1⁄4 inches to provide sufficient strength and performance in most kitchens and bathrooms. Factor in intended use, span length, overhang size, and budget to help determine if going up to 1 1⁄2 inches or beyond is warranted for your space. Consulting with an experienced countertop pro can ensure you get the right slab thickness tailored to your specific needs. With proper installation and care, your quartz countertops will provide enduring beauty and enjoyment for many years.