How Thick is Quartz Kitchen Countertop?

Quartz countertops are a popular choice for modern kitchens due to their durability, appearance, and easy maintenance. When selecting quartz for your kitchen countertops, an important consideration is the thickness. Here is a detailed overview of standard quartz countertop thicknesses and how to choose the right thickness for your needs.

Standard Thicknesses for Quartz Countertops

Quartz countertops are typically available in three standard thicknesses:

1. 3/4 inch

This is the minimum recommended thickness for quartz countertops. At just under one inch thick, it provides an affordable option that works well for simple countertop installations like low-traffic areas or in small kitchens. The slim profile makes it easy to install without making counters feel too bulky.

2. 1 1/4 inch

The most popular and commonly used thickness for quartz is 1 1/4 inches. This medium thickness provides a good balance of durability and affordability. Countertops are sturdy enough for daily use while not being overly thick. Most standard quartz installations are done at 1 1/4 inches.

3. 1 1/2 inch

For a thicker, more substantial feel, 1 1/2 inch slabs can be used. The extra thickness adds weight and a more luxurious, stone-like appearance. While not always necessary, the added thickness provides maximum durability for high-traffic areas.

4. 2 inch

Quartz slabs can also be ordered in a full 2 inch thickness but this is less common. Two inch thick quartz is very durable but requires extra labour to install due to the weight. This ultra-thick option is usually only used for commercial projects or statement kitchen islands.

Factors to Consider for Quartz Thickness

When deciding which thickness is best for your kitchen, consider the following:

Usage Level

If the counters will be used often for food prep and serving meals, a thicker 1 1/4” or 1 1/2” provides more strength. High-traffic areas like a kitchen island or buffet line for entertaining may benefit from thicker quartz.

Overhang Length

The length of any overhangs off the cabinetry should be considered. Long overhangs will require thicker material to prevent cracking or drooping over time. 1 1/4 to 1 1/2 inches is best for overhangs over 8-10 inches.

Backsplash Height

Higher backsplashes place more weight on the countertops which can make thinner options prone to cracking. Opt for 1 1/4 inch or more with backsplashes over 4 inches tall.

Cabinet Base

The type of cabinetry and base support will impact the thickness needs. Sturdy cabinet boxes with 3/4 inch decking offer more support for thinner 1 1/4” quartz. For weaker bases, go thicker to prevent sagging.


As expected, thinner 3/4” slabs are most affordable while 1 1/2” and 2” are priciest. Factor overall project budget but don’t compromise too much on thickness to save on costs.

Standard Thickness Recommendations

Keeping the above factors in mind, here are the standard quartz thicknesses generally recommended for various applications:

  • Low use areas like bathrooms or bar seating – 3/4 inch
  • Standard everyday use kitchen counters – 1 1/4 inch
  • Kitchen islands, buffet counters, vanities – 1 1/4 or 1 1/2 inch
  • Heavy duty commercial counters – 1 1/2 or 2 inch

Many quartz manufacturers and installers will have minimum requirements so check on recommended thicknesses as well. In summary, 1 1/4 inch is suitable for most kitchens but consider upsizing to 1 1/2 inch for added peace of mind in high-traffic zones. Carefully measure existing counters and cabinets to order the correct slab thickness. This ensures your beautiful new quartz countertops provide durability and function for years to come.

Frequently Asked Questions About Quartz Countertop Thickness

Is a thicker quartz countertop better?

In most cases, yes. Thicker slabs are more resistant to damage from impact, more rigid for minimizing bending, and less prone to cracks from heavy loads or improper support. Many experts recommend 1 1/4 inch as the ideal thickness for residential kitchen counters.

Is 3/4 inch quartz too thin?

While 3/4 inch thick quartz is available, it is best used in low-traffic areas only. For kitchen counters that will see daily use, a minimum of 1 1/4 inch thickness is recommended for adequate strength. Using 3/4 inch in high wear areas often leads to cracking or movement over time.

Should I get 1 1/4 or 1 1/2 quartz?

For most residential kitchens, 1 1/4 inch quartz provides sufficient durability and support. However, opting for 1 1/2 inch thickness provides an extra layer of rigidity and strength. This can be smart for busy kitchens or areas with longer unsupported overhangs.

Can quartz counters be too thick?

It is possible for quartz slabs to be over-specified in terms of thickness. Two inch thick quartz is quite excessive in many homes as it requires heavy-duty cabinetry for proper support. Most residential kitchens only require a maximum thickness of 1 1/2 inches for adequate durability.

Does thicker quartz change the look?

Going with thicker quartz does slightly change the visuals and feel underhand. A 1 1/2 inch piece will have a more substantial, stone-like appearance compared to a daintier 3/4 inch piece. The thicker the slab, the heavier and more luxurious quartz will seem.


When designing your dream kitchen, don’t underestimate the importance of choosing the right quartz countertop thickness. While thicker quartz does come at a higher price, going too thin to save money can lead to cracking or other damage over time. For most homes, a 1 1/4 inch or 1 1/2 inch slab gives the best combination of strength, functionality, and value. Be sure to consult quartz fabricators to pick the appropriate thickness based on cabinet type, overhangs, and expected use. With the right thickness, your beautiful quartz counters will maintain their beauty for many years as the centerpiece of your kitchen.