What Epoxy to Use for Quartz Countertops

Quartz countertops are an increasingly popular option for kitchen and bathroom remodeling projects. Made from engineered stone, they offer superior durability, scratch-resistance, and low maintenance compared to natural stone counters. When installing quartz countertops, using the right epoxy is crucial for proper bonding and long-term performance. In this comprehensive guide, we’ll discuss the different types of epoxy for quartz countertops and provide tips on choosing the best option for your needs.

What is Epoxy and Why is it Used for Quartz Countertops?

Epoxy is a two-part adhesive made from resin and hardener. When mixed together, the components undergo a chemical reaction and harden into a rigid, durable plastic material that bonds strongly to the quartz slab and substrate underneath. Epoxy creates a seamless bond that prevents moisture penetration, cracking, and separation between the countertop and base. It also levels any imperfections and fills gaps, providing a smooth uniform surface.

The main reasons epoxy is the go-to adhesive for quartz countertops are:

  • Strong Bonding Power – Epoxy forms a tenacious mechanical and chemical bond that adheres firmly to quartz and other materials. This prevents detachment or cracks.
  • Moisture Resistance – Epoxy resists water penetration that can undermine the substrate and cause warping or delamination.
  • Gap Filling Properties – Epoxy flows easily to fill any spaces or cracks for an even surface.
  • Aesthetic Finish – Clear epoxy blends inconspicuously for an invisible finish. Colored epoxy can also create decorative effects.

Factors to Consider When Choosing Epoxy

With many epoxy options on the market, it’s important to choose the right product for your specific project. Here are the key factors to consider:

Intended Application

  • Countertop Installation – Opt for epoxy designed for countertops. General construction epoxy may not bond quartz well.
  • Color Matching – If you want colored epoxy for design effects, choose a tintable adhesive.
  • Surface Material – Ensure compatibility with quartz. Some epoxies bond better to natural stone.

Performance Properties

  • Bond Strength – Choose an epoxy with strong adhesive power specifically formulated for quartz.
  • Cure Time – Faster-curing epoxy lets you complete projects quicker.
  • UV/Chemical Resistance – Epoxy with UV inhibitors prevents yellowing while chemical resistance provides durability.

Ease of Use

  • Pot Life – Longer pot life gives you more time to apply the epoxy.
  • Mixing – Pre-proportioned epoxy mixes more consistently than hand measuring.
  • Application – Consider epoxies with better flow and self-leveling properties.
  • Cleanup – Low odor and low VOC epoxy simplifies cleanup.

Types of Epoxy for Quartz Countertops

There are a variety of epoxy options specially formulated for adhering quartz countertops.

Quartz Countertop Epoxy

This specialized epoxy is engineered for quartz installation with excellent adhesion, fast cure time, and low odor. It creates secure bonds between the quartz slab and substrate. Brands like GranQuartz and Techniseal offer quartz-specific epoxy.

Stone Epoxy

While stone epoxy is also suitable for quartz countertops, it’s designed for natural stone installation. It provides extra durability against cracks, moisture, and heat. Top brands include Akemi and Tenax.

Construction Epoxy

Heavy-duty construction epoxy can be used to adhere quartz countertops. It bonds tenaciously to various materials. Just ensure it’s approved for quartz application. Gorilla Epoxy and Loctite work well.

Colored Epoxy

For a decorative touch, colored epoxy comes in a wide palette of solid and granite-like colors. Leading options are Cheng Concrete Epoxy and ArtResin.

Fast-Cure Epoxy

These rapid-curing epoxies set fully in just 30-60 minutes so projects can be completed quicker. They allow for faster fabrication and installation.

How to Choose the Right Epoxy for Your Quartz Countertops

Follow these tips for selecting the ideal epoxy:

  • Consult manufacturer guidelines – Check what epoxy the quartz fabricator recommends for best results.
  • Read technical specifications – Verify suitability for quartz, cure time, strength, UV resistance, etc.
  • Consider project scale – Larger projects may need commercial-grade epoxy for convenience and value.
  • Factor in application method – Self-leveling epoxy works better for pouring while thicker epoxy is good for spreading.
  • Check ratings and reviews – Choose epoxy with consistently positive feedback from quartz installers.
  • Compare brands and prices – Weigh quality against cost to get the best value.

Applying Epoxy for Quartz Countertops

Once you’ve selected the right epoxy product, proper application technique is key for optimal bonding:

  • Carefully follow manufacturer’s mixing instructions for accurate ratios and thorough blending.
  • Ensure all surfaces are clean, dry, and free of debris before applying epoxy.
  • Spread the epoxy evenly across the underside of the quartz slab and substrate using a notched trowel.
  • Let the epoxy become tacky before setting the quartz slab in place and applying even pressure. This prevents sliding.
  • Use clamps, shims, or weight to keep the quartz firmly in contact with the base as the epoxy cures.
  • Remove any squeeze-out of excess epoxy using a putty knife once cured.
  • Allow the manufacturer’s recommended full curing time before use.

Proper epoxy selection and application minimizes the risk of cracks, gaps, and separation in your quartz countertops for years of hassle-free performance.

Frequently Asked Questions

What epoxy should I use for a quartz kitchen countertop?

For a kitchen, use quartz countertop epoxy or stone epoxy which offer maximum bond strength, moisture resistance, and durability under daily use. Brands like GranQuartz or Akemi work well.

Does all epoxy work for quartz?

No, general purpose and construction epoxy may not adhere optimally long-term. Use epoxy specially engineered for quartz and stone for best results.

How strong is epoxy for quartz countertops?

Quartz epoxy forms an incredibly strong bond up to 1800 psi. This prevents any separation or cracks between the quartz slab and substrate.

Should I use fast-cure epoxy?

Fast-cure epoxy sets fully in under an hour allowing faster project completion. Just ensure it’s an epoxy designed for quartz not just rapid drying.

How do I get a smooth finish with epoxy?

Choose a self-leveling epoxy which will create an even, smooth layer. Apply evenly and allow proper flow before drying. Avoid over-working the epoxy.


Installing quartz countertops using the proper epoxy ensures a flawless long-lasting result. Seek out epoxy engineered specifically for quartz that offers robust adhesion, rapid curing, and easy application. Carefully follow the manufacturer’s instructions for mixing and installing the quartz for optimal performance. With the right epoxy choice and application, you can enjoy beautiful, durable quartz countertops that stand the test of time.