Installing granite tile countertops can transform the look of your kitchen or bathroom by adding natural beauty and elegance. With proper planning and some DIY skills, you can install granite tiles yourself and save on labor costs. Here is a step-by-step guide on how to install granite tile countertops.

Choose the Granite Tiles

Granite tiles come in a variety of colors, patterns, finishes, sizes, and thicknesses. When selecting tiles, consider the look you want as well as your budget. Some things to keep in mind:

  • Colors – Granite tiles come in different shades like black, white, gray, brown, red, green, blue, and more. Choose a color that complements your overall kitchen or bathroom design.
  • Finishes – Granite tiles can have a polished smooth finish or a flamed/honed finish with slight texture. Polished tiles enhance colors while textured tiles hide flaws.
  • Tile thickness – Granite tiles come in thicknesses of 3/8″, 1/2″, 5/8″, 3/4″ etc. The thicker tiles are more durable and suitable for countertops.
  • Tile size – Standard sizes are 12″x12″, 16″x16″ or 18″x18″ but mosaics and ledgestones are also options. Larger tiles mean fewer grout lines.
  • Purchase 10-15% extra – This allows for cuts, waste, and future repairs. Buy all tiles together for consistent coloring/pattern.

Prepare the Counter Area

Proper preparation of the existing countertop area is key to a successful installation:

  • Remove old countertop – Detach and safely dispose of old countertop surface. Also remove sink/faucet if possible.
  • Deep clean – Thoroughly clean the base cabinets to remove grease,grime and debris which can prevent adhesion.
  • Repair & level – Fix any water damage or holes in the base cabinets. Use shims to level the countertop base.
  • Apply adhesive primer – Prime the base with an adhesive primer/sealer to help the granite bond properly.

Make a Template

Make a template of the countertop layout to get measurements for cutting:

  • Use cardboard, plastic sheets, or foam board to create a template.
  • Trace the shape of the counter area, faucet holes, stove cut-outs etc accurately.
  • Cut out the template and test fit on counter to ensure proper sizing. Make changes if required.
  • Once the template is right, trace it onto the granite tile to mark cuts.

Cut the Granite Tiles

Use the following tools to accurately cut the granite:

  • Circular wet saw with diamond blade – Gives precise cuts. Use water to cool.
  • Angle grinder with diamond blade – For straight line edging and miter cuts.
  • Jigsaw with granite blade – Tight curves and openings. Go slow.
  • Tile nippers – Quick small snips to complete or clean cuts.
  • Eye protection, gloves, and mask – Safety first! Granite dust is harmful.
  • Mark and cut tiles as per the template. Always double check measurements.

Install the Granite Tiles

Here are the steps for proper installation of the granite tiles:

Step 1 – Apply Mortar

  • Use a notched trowel to spread thinset mortar evenly on the counter base.
  • Maintain a consistency of 3/8″ to 1/2″ thickness. Spread only enough mortar for one section.

Step 2 – Set Granite Tiles

  • Place the pre-cut granite tile sheet on the mortar and press down firmly.
  • Check for evenness with a level and tap gently with a rubber mallet.
  • Place tile spacers between granite tiles to maintain consistent grout line spacing.

Step 3 – Let Mortar Cure

  • Allow thinset mortar to cure for 24-48 hours as per manufacturer instructions.
  • Avoid walking on tiles and do not install next sections till it cures.

Step 4 – Apply Grout

  • Mix grout as per package directions and work it into the joints with a rubber grout float.
  • Wipe away excess grout with a damp sponge and allow drying completely.
  • Apply grout sealer to protect from stains.

Finish Edges and Seal Tiles

Finishing touches complete the installation:

  • Hone, polish or grind exposed tile edges for finished look.
  • Apply granite sealant as per manufacturer specs to resist stains and damage.
  • Re-install sink, faucet, appliances etc as needed. Caulk edges with silicone sealant.
  • Admire your beautiful new granite tile countertop! Enjoy for years to come.

Frequently Asked Questions

What type of thinset mortar should I use?

Use a polymer-modified thinset mortar specifically designed for natural stone tiles. This provides a stronger bond and flexibility.

Can I install granite tiles over existing countertops?

Granite must be installed over a secure base, not directly over existing laminates or solid surfaces. The old countertop must be removed first.

How long does it take to install a granite tile countertop?

The installation time depends on the counter size but expect it to take 2-3 days for a medium sized kitchen countertop. Planning, prep work, cutting, mortar cure times all add to the timeline.

Do granite countertops need ongoing maintenance?

Beyond initial sealing, granite is easy maintenance. Use coasters, trivets and cutting boards to protect from heat/stains. Re-apply sealer annually. Avoid using abrasive cleaners.

Is DIY granite tile installation difficult for a beginner?

Granite tile installation takes some DIY skill and experience. Novices can certainly install granite successfully themselves with proper planning, patience, tools and help.


Installing granite tile countertops greatly improves the appearance and value of kitchens and bathrooms with a stylish and durable natural stone surface. Follow the techniques here for a flawless do-it-yourself installation. With careful planning and preparation, even granite tile beginners can transform their living spaces beautifully and cost-effectively. Just take it slow and steady.