Flooring & TilingIntermediate1–2 days (plus 24 h mortar cure)10 steps

How to Tile a Bathroom Floor

Tile a bathroom floor with clean lines and long term durability. This guide covers subfloor prep, layout, cutting, grouting, and sealing.

Plan the layout and materials

Measure the room and order 10 percent extra tile for cuts and breakage. Choose grout color and tile pattern before you start.

📦Materials for this step3show

Floor tileGroutTile spacers

🔧Tools needed2show

Tape measureCalculator

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Dry lay a few tiles to confirm the look.

Remove old flooring

Remove the toilet and any trim. Pull up the old floor and scrape adhesive so the subfloor is clean.

📦Materials for this step1show

Trash bags

🔧Tools needed2show

Pry barScraper

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Turn off the toilet supply and drain the tank before removal.

Prep and stiffen the subfloor

Check for squeaks and loose areas. Add screws to secure the subfloor and patch any low spots.

📦Materials for this step2show

Subfloor screwsFloor patch

🔧Tools needed2show

Drill or impact driverStraightedge

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Tile needs a stiff floor. Deflection causes cracks.

Install cement backer board

Spread thinset, then lay backer board. Screw it down on the recommended grid and stagger seams.

📦Materials for this step3show

Cement backer boardThinsetBacker board screws

🔧Tools needed3show

Notched trowelDrillUtility knife

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Do not skip thinset under the backer board.

Tape and waterproof seams

Tape all seams with alkali resistant mesh tape and skim with thinset. Apply a waterproofing membrane if required.

📦Materials for this step2show

Mesh tapeWaterproofing membrane

🔧Tools needed1show

Putty knife

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Let the skim coat dry before you start tile.

Dry layout and snap lines

Find the center of the room and snap chalk lines. Adjust so you avoid tiny sliver cuts at the walls.

📦Materials for this step1show

Chalk line

🔧Tools needed1show

Chalk line

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The goal is balanced cuts on both sides of the room.

Set the tile

Spread thinset with a notched trowel and press tiles in place. Use spacers for even joints. Work in small sections.

📦Materials for this step2show

ThinsetTile spacers

🔧Tools needed2show

Notched trowelTile levelers

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Lift a tile now and then to confirm full coverage.

Cut edge tiles

Measure and cut tiles for edges and around obstacles. Use a tile saw for clean cuts.

📦Materials for this step1show

Edge tiles

🔧Tools needed2show

Tile sawTile nippers

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Wear eye protection when cutting tile.

Grout the joints

Let the thinset cure, then spread grout and pack the joints. Wipe haze with a damp sponge as you go.

📦Materials for this step1show

Grout

🔧Tools needed2show

Grout floatSponge

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Do not over wash or you will weaken the grout.

Seal and reinstall fixtures

Seal grout if required by the product. Reinstall the toilet and base trim. Caulk the perimeter where the tile meets the tub or wall.

📦Materials for this step2show

Grout sealerSilicone caulk

🔧Tools needed1show

Caulking gun

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Allow grout to cure before sealing.

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Safety & Legal Disclaimer

This guide is for informational purposes only and does not constitute professional engineering, architectural, or contractor advice. Building codes vary by jurisdiction — always verify local requirements, obtain all required permits, and consult a licensed contractor or structural engineer before beginning any construction project. Aribuilds makes no warranty as to the accuracy, completeness, or suitability of this information for any particular project. Use of this guide is at your own risk. Aribuilds accepts no liability for personal injury, property damage, structural failure, or code violations.

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