Thickness of Granite Countertop: Important Things to Consider

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During kitchen renovation, the thickness of the granite gets confusing because most homeowners frequently ask what should be the thickness of their granite countertop.

Though it all depends on your preferences, there are some already set standards that you should always consider when deciding the kitchen design.

So, what important things to consider when selecting the ideal thickness of granite countertops?

The varying thickness options are also essential in design, color, pattern, and orientation.

Let’s find out what is the best thickness for granite countertops.

Does the Thickness of the Countertop Matter

The granite thickness is important due to its usage in flooring, kitchen countertops, bathroom, and other home areas. Usually, the standard thickness for wall cladding, shower seating, and backsplash is 2cm. While for kitchen countertops, 3cm is considered the standard thickness. The 3 cm thickness adds superiority in design and makes it look more appealing.


Describes Overall Design

You might have planned to organize your kitchen with granite backsplash, stainless steel sinks, granite countertops, and a cooking range but ignored the consistency in quality by installing thinner granite; all your effort will be a complete waste. The thickness doesn’t only ensure longevity and durability but is also a major factor in enhancing the beauty of the kitchen.

Ensure More Durability

A thin countertop will shatter if you accidentally drop something heavy on it. It will wear out soon and won’t last for a long time. The thicker granite countertops can withstand more vibrations and stand firm during heavy shocks. In contrast, a thin countertop will not even bear the loud noise of a car horn or radio. There is a high risk of cracks and streaks appearing on the island if the granite is cheap and thin.

What Are The Granite Options For Thickness

It has been estimated that a high-quality granite slab shouldn’t be less than 3 cm in thickness, but in certain spaces, the need for thinner slabs is prioritized. Some areas, such as prefab countertops, require only 1 to 2 cm of thickness. Here are varying granite thickness options.

1cm to 1.2cm Countertops


1 to 1.2 centimeters of granite countertops are considered the thinnest options that require laminate edges to give them a thick appearance. However, professionals do not suggest using granite for countertops any less than 2 cm because you will need to add extra support. The main use of these thin countertops is inside hotels, where they do so to cut costs.

2cm to 3cm Countertops

Among different thickness options, 2 cm is considered a great choice which is quite sustainable and durable. For additional support, you can put the plywood in the upper regions of the cabinets. However, laminated edges are needed to alter the look. These countertops meet industry standards, and further reinforcement is ensured during installation to keep the counters safe from breaking.

Thickness More Than 3cm Countertops

The countertops with 3cm or more thickness are listed in the gold standards due to their extensive durability. You will not need additional support of plywood or laminated edges to prevent them from sagging.

There are also options available for 6 cm thick countertops in the market. The thicker slabs look more attractive, and homeowners often prefer to invest in this thickness.

What Is The Best Thickness For Granite Countertops

Most homeowners and industries invest in a 3 cm thickness of granite countertops, bathrooms, and other flooring areas. However, thicker granite means more durability. These are some standardized thicknesses for different types of granite slabs and tiles.

The Thickness of Granite Tiles

Most people choose granite tiles for flooring their home spaces. The thickness options they choose range from 2 cm to 3 cm. These are the ideal thicknesses for premium flooring and look great. You can get the following sizes of granite tiles for your home.

Small or 1-inch size of mosaic tile has 1/8 inches of thickness, and medium or 6/6 inches tile has 3/8 inch thickness. In contrast, large-sized tiles of 18/18 inches size require a thickness of 1/2 inch. These are the ideal sizes high in demand by commercial and domestic users.

Standard Thickness of Granite Slabs


Granite slabs are cut into perfect sizes to make them suitable to fit any place. Usually, the big slab ranges from 1.8 to 3 cm, and the smaller range ranges from 1.6cm, 2cm, to 3 cm. These small and big sizes slabs are cutter slabs from incomplete blocks. At the same time, the gangsaw slabs vary in size from 2cm to 3 cm.

These sizes are ready to use and do not require more cut-outs or major modifications.

Ideal Thickness For Kitchen Island & Vanity

In today’s world, people are more into 2cm to 3cm sized kitchen islands or countertops instead of too thick or thin slabs. However, thicker granite costs more, and people who find it affordable prefer to use it in their homes. The standard thickness for a kitchen island is 3cm, while for bathroom vanity tops, the ideal thickness is 2cm.

Things to Consider When Selecting Your Granite

Your confusion about the thickness of granite might have been resolved, but there are several other factors on which the quality of granite depends. If you are looking for some options to remodel your kitchen by selecting the most suitable granite countertops, these essential tips will help resolve your problem.

What you NEED to know before selecting your granite

Elegant Design With a Warm Finish

Always follow your gut when you want to design something new. We suggest you match the dry colors of wood cabins with earthly-colored granite for the kitchen countertops. You can also add a warm finish of bronze to the faucets and fixtures.

Go With Contrasting Colors

You do not always need to choose the same colors to match the entire decor. If your countertops are white, you can add dark shades for a finishing touch. Choosing varying or contrasting shades will add glory to your kitchen. Make sure you are adding balanced colors, patterns, and textures.

Adjust According to Home Decor


Your kitchen isn’t supposed to look alone like a beacon without elements matching any part of your home. The style and colors should comply with your home decor. This way, you can make your kitchen look interesting when all faucets, knobs, sinks, countertops, and fixtures match seamlessly with granite.

Overall Cost 

The essential thing you can’t ignore when selecting granite is its cost. The design, colors, and all other features are based on the price. You try to get all features only at an affordable price. So, start calculating the total budget you want to spend on this renovation and then jot down each new part you want to buy for your kitchen.

Frequently Asked Question

What is the difference between the grades of granite?

Granite is divided into grades from high to low with several factors. Marks, pittings, colors, veins, composition, and thickness pick up these grades.

  • Grade 1 is the least expensive and viable for commercial purposes.
  • Grade 2, with 3/4 inches, is middle-level granite.
  • Grade 3 is high-grade granite, and this is the most expensive one.

Will your thicker granite countertops require more sealant than thinner?

Yes, this is true. The thicker granite countertops only require a little more sealant because of the thick edges. These edges aren’t too thick to put an extra burden on the budget; rather, with a single purchase of sealant, you can cover them. There is no alteration in the surface area and the backsplash or countertops. You will only need to add one-tenth of an ounce of sealant for thicker counters.


Granite is perfectly suitable for your kitchen countertops to make them look stunning and long-lasting without needing frequent repairs. However, with all the important things to consider when selecting your granite, you must also know the exact thickness of granite countertops required for your kitchen.

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