How to Install 12x24 Floor Tiles: Step-by-Step Guide

Installing large-format 12x24 floor tiles can transform your home with a modern, clean look. With the right tools and careful planning, you can achieve professional results even in a DIY project.

Tools & Materials You’ll Need

• 12x24 floor tiles

• Tile adhesive (thin-set mortar)

• Notched trowel (½ inch recommended for large tiles)

• Tile spacers

• Level

• Tile cutter or wet saw

• Rubber mallet

• Grout and grout float

• Sponge and bucket of water

• Tape measure & pencil

1. Prepare the Subfloor

Ensure the subfloor is clean, dry, and level. Repair cracks or uneven areas with leveling compound. A solid surface is essential for large tiles to prevent lippage (uneven edges).

2. Plan Your Layout

Measure the room and snap chalk lines for a reference grid. Dry-lay a few tiles in the center to visualize spacing and avoid tiny slivers at the edges. Symmetry creates a polished look.

3. Mix and Apply Thin-Set Mortar

Mix mortar as directed. Spread a small section with a notched trowel. Only apply enough for a few tiles at a time to prevent drying.

4. Lay the Tiles

Place the first tile along the chalk line, press firmly, and use spacers to keep grout lines even. Tap lightly with a rubber mallet and check level frequently to avoid uneven edges.

5. Cut Tiles to Fit

Measure tiles for edges, corners, or obstacles. Use a wet saw or tile cutter for accurate cuts.

6. Allow Mortar to Set

Let mortar cure for at least 24 hours before grouting. Check the manufacturer’s instructions for exact times.

7. Apply Grout

Remove spacers. Mix grout and press it into joints with a grout float. Wipe excess grout with a damp sponge.

8. Final Cleaning and Sealing

Once grout cures (24–48 hours), clean the tiles thoroughly. Apply grout sealer to protect against moisture and stains.

Pro Tips

• Back-butter both tile and floor for stronger adhesion.

• Frequently check for level large tiles can be uneven.

• Work in manageable sections to prevent mortar from drying too quickly.

With proper preparation and attention to detail, installing 12x24 tiles can give your space a stunning, professional finish.

Why Choose Ehsan’s Interior Remodeling for Tiling?

We provide Tile installation services in Portland, Oregon.

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