How to Install Quartz Tile Countertop

Installing a quartz tile countertop can transform the look of your kitchen or bathroom by adding a stylish and durable surface. With the right tools and preparation, installing quartz tiles is a manageable project for experienced DIYers. Here is a step-by-step guide on how to install quartz tile countertops.


Quartz tiles make an excellent choice for countertops due to their strength, scratch resistance, and ease of maintenance. Made from crushed quartz blended with resin and pigments, quartz tiles are non-porous, so they don’t need to be sealed and won’t harbor bacteria. Their durability makes them ideal for heavy-use areas like kitchens. Quartz tiles come in a wide variety of colors and patterns to suit any décor.

When installing quartz tiles, proper planning and surface preparation are key to achieving a seamless look. Quartz tile is installed similarly to ceramic or porcelain tile, using a thinset mortar adhesive. Care needs to be taken to achieve a perfectly flat substrate and proper grout lines. This guide will walk you through the entire process of installing a quartz tile countertop, from preparing the surface to grouting and sealing. With time and care, you can have a beautiful new countertop that will last for many years.

Preparing the Countertop Surface

Remove the old countertop: The first step is to remove and dispose of the old countertop. Use a reciprocating saw or other demolition tools to detach the countertop and carefully pry it off the base cabinets. Remove any adhesive residue until you expose the bare substrate.

Inspect and repair the substrate: Check that the surface of the cabinets is completely clean and smooth. Any damage or unevenness can eventually cause the quartz tiles to crack or become detached. Fill any gouges with wood filler and sand the surface smooth.

Add support braces: Quartz tiles are heavier than other countertop materials, so support braces should be added to reinforce the under-side of the cabinets. Attach 2×4 braces horizontally across the frame and any sagging areas.

Waterproof the substrate: Since bathrooms and sinks tend to have more exposure to moisture, it’s important to make the surface water-resistant before installing quartz tiles. Roll on a thin layer of waterproofing membrane or use a cement backer board.

Choosing Your Materials

Select your quartz tiles: Quartz tiles come in standard 12″ x 24″ sizes, but lengths can vary. Choose tiles with low porosity (less than 0.5%) for water resistance. Select a color and pattern that matches your décor. Buy 10-15% extra to account for unusable tiles and mistakes.

Adhesive mortar: For the adhesive, use a premium polymer-modified thinset mortar. This will provide a stronger bond and prevent cracks or detachment over time. White thinset is best for lighter quartz tiles.

Grout: Choose an epoxy or urethane grout designed for quartz tile. Unlike cement grout, epoxy is waterproof, stainproof, and crack resistant. Pick a grout color that contrasts well with your tiles.

Trowels and spacers: For spreading thinset, use a 1/4″ x 3/8” notched trowel. You’ll also need tile spacers (1/16″ thick) to maintain even grout line spacing between tiles.

Wet saw: To accurately cut the quartz tiles, you’ll need a wet saw with a diamond blade. It cools and lubricates the blade while cutting to avoid chips and cracks.

Step-by-Step Installation

1. Lay out your tile pattern: Dry lay a few rows of tile across the surface to determine the optimal layout. Ensure you will have at least a 1/8” grout line between tiles and avoid having any tiles smaller than a half piece at the edges and corners. Cut border tiles to fit if needed.

2. Mix and apply thinset mortar: Prepare the thinset according to package directions. Use a notched trowel at a 45° angle to spread a workable amount of thinset evenly across the surface, about 1/8” thick.

3. Set the first row of tiles: Starting at your focal point, lay the corner tile then work outward. Place spacers around each tile edge. Check tiles are level and press into the thinset firmly. Allow 1/8” gaps at walls. Wipe away excess thinset immediately with a damp cloth.

4. Cut tiles to fit: Use the wet saw to cut border tiles to size. Run the saw slowly and steadily to avoid chipping the edges. The turbine’s water prevents overheating. Let cut tiles dry before setting them.

5. Continue setting tiles in sections: Work in manageable 3 sq. ft. sections, laying tiles row by row. Verify each tile is flat and adhered well before moving on. Allow the thinset to set for 24 hours before grouting or walking on the tiles.

6. Mix and apply the grout: Prepare epoxy grout per package instructions. Holding a rubber grout float at a 45° angle, spread grout forcefully to fill the joints. Avoid getting grout on the tile faces.

7. Clean off excess grout: Wipe any remaining grout off the tiles with a damp sponge in a circular motion. Rinse the sponge frequently. Once the grout has cured, buff the tiles with a soft cloth for a bright finish.

8. Seal and finish: Apply a penetrating grout sealer according to manufacturer’s directions to protect from stains and moisture. Caulk between the countertop and walls with a flexible silicone sealant. Your quartz tile countertop is complete!

Tips for Success

  • Acclimate your tiles before installing by leaving them in the room for 1-2 days. This prevents cracking or warping.
  • Make sure the thinset mortar stays workable and doesn’t dry out by mixing small batches and enclosing unfinished work with plastic.
  • Use tile leveling spacers and check each tile for flatness as you go to achieve professional-looking results.
  • Clean excess grout off tiles thoroughly before it dries for easier cleanup. Avoid rubbing too hard on polished quartz surfaces.
  • Seal and re-seal the grout lines yearly to prevent staining and maintain the countertop’s beauty.

Frequently Asked Questions

How do I cut holes for a sink or fixtures?
Use the wet saw to cut any openings needed, such as for a sink or faucet. Make a template first and account for the thickness of the grout lines. Cut the tiles carefully to avoid cracks.

Can I install quartz tile over existing countertops?
In some cases, quartz tiles can be installed over old laminate or stone countertops if the surface is prepped flat and smooth. The substrate must be structurally sound with no flexing.

Is special maintenance needed for quartz tiles?
Quartz resists scratching and staining so minimal maintenance is required. Clean with pH-neutral stone soap and water. Avoid abrasive pads or acidic cleaners which can dull the surface.

How long will a quartz tile countertop last?
With proper installation and care, quartz tile countertops can last 20-30 years or longer. The quartz itself is extremely durable, so the limiting factor is often the quality of the grout and sealants used.


Installing a quartz tile countertop successfully requires careful planning, precision, and patience. If you take the time to properly prepare the surface, lay the tiles, and apply the grout, you can end up with a fantastic countertop that will bring style and value to your home for many years. Quartz tile’s durability, low maintenance, and custom design options make it one of the best choices for countertops that get heavy daily use. With this step-by-step guide, you can tackle a quartz tile installation with confidence.