How to Install Solid Quartz Countertops

Installing solid quartz countertops can transform the look of your kitchen or bathroom by adding an elegant and durable surface. With proper planning and preparation, you can install quartz countertops yourself and save on installation costs. Here is a step-by-step guide on how to install solid quartz countertops.


Quartz countertops, made from ground quartz crystals combined with resins and pigments, have become popular in recent years as an alternative to natural stone and laminate. The main benefits of quartz countertops are:

  • Extremely durable and scratch-resistant surface
  • Stain, heat, and water resistant
  • Available in wide range of colors and patterns
  • Non-porous so does not require sealing
  • Easier maintenance than natural stone
  • Long lasting with warranties up to 15 years

Quartz slabs are fabricated and cut to size for installation. Here are the key steps involved in installing solid quartz countertops yourself.

Planning and Preparation

Proper planning and preparation are crucial for a smooth quartz countertop installation.

Measure countertop area
Take detailed measurements of the countertop space including length, width, overhangs, and any cutouts needed for sinks and cooktops. Allow an overhang of 1 1⁄4” on each side. Check for square by measuring diagonals.

Choose quartz slab
Select the color, pattern, and finish based on your kitchen or bath design. View quartz samples in person to check color consistency and pattern detail.

Coordinate fabrication
Work with a countertop fabricator to get the slabs cut to the precise measurements required. They will make necessary cutouts and drill holes per your instructions.

Gather tools and materials
You’ll need safety gear, basic hand and power tools, adhesive, sealant, and other installation supplies. Ensure you have all necessary tools handy before starting.

Clear countertops
Completely clear existing countertops. Remove any old backsplash, countertop, and sink/faucet if a replacement install.

Inspect base cabinets
Make sure all base cabinets are level, secure, and square. Address any issues before installing quartz.

Turn off water supply
Turn off water supply lines and disconnect any plumbing connections. Cap off lines during quartz installation to avoid leaks.

Thorough planning and preparation will make the installation process go smoothly.

Installation Steps

With proper planning done, you are now ready for quartz countertop installation. Follow these key steps:

Clean Surface

Clean the base cabinet surface thoroughly removing any grease, debris, or dust. This allows the adhesive to bond properly.

Apply Adhesive

Apply a zig-zag pattern of adhesive to the back of the quartz slab using a caulking gun. Use adhesive made specifically for quartz.

Set Quartz in Place

Carefully lay the quartz slab in place on the base cabinets. Make sure overhang matches measurements taken earlier.

Press Down

Apply even pressure across the surface to adhere it properly to the base. Remove any excess adhesive squeezed out.

Secure Slab

Use C-clamps around the edges of the quartz slab while the adhesive dries. This prevents the slab from shifting.

Seal Edges

Once set, apply clear silicone sealant along the seam where the quartz slab meets the wall. Smooth the sealant with a rounded tool.

Install Backsplash

If a backsplash is being used, set it in place and apply adhesive and sealant similar to the main counter.

Replace Plumbing

Reconnect any plumbing and faucets that were removed earlier. Turn on the water supply and check for leaks.

Seal Surface

Apply a sealant to the entire quartz surface following manufacturer instructions to protect it. Buff off any excess.

Clean Up

Remove all debris, tools, equipment, and protective coverings. Wipe down the countertops with a clean, damp cloth.

And that completes the installation of your new solid quartz countertops!


What thickness quartz should be used?

For residential countertops, 3 cm (1 1⁄4”) slabs are commonly used. Go thicker for more durability and a stronger surface.

How long does quartz adhesive take to dry?

Adhesive drying time depends on the product used. Most adhesives become fully cured in 24-48 hours. Avoid placing heavy objects during this time.

Can quartz countertops be installed directly over existing counters?

It is not recommended to install quartz over old countertops. They should be removed to allow proper adhesive bond to the base cabinets.

Do quartz countertops need to be sealed?

No, quartz does not require sealing due to its non-porous nature. A surface sealant can be applied for added protection.

Can quartz counters support sit-on bar countertops?

Quartz has high flexural strength to allow cantilevered or sit-on support for bar countertops extending up to 16” without extra support.

How long do quartz countertops last?

With proper care, quartz countertops can last for many years. Most quartz warranties cover 10-15 years for manufacturing defects.


Installing quartz countertops can greatly enhance your living space with a high-end look. With some careful planning and preparation, it is possible to tackle quartz installation as a DIY project and save on installer costs. Just be sure to carefully follow each step of the process. Quartz is an excellent investment that will provide beauty and durability for many years down the road with minimal maintenance required. With your new knowledge of how to install solid quartz countertops, you can start your next remodeling project with confidence.