How To Lay Tile On Osb Subfloor

Laying tiles on OSB subfloor is not only a do-it-yourself-friendly task but also an inexpensive way to improve the aesthetics and durability of your flooring. OSB (Oriented Strand Board) is a common subflooring material known for its strength and stability. By following a few key steps and using the appropriate materials, you can achieve a professional-looking tiled floor on your OSB subfloor.

Materials Needed:

Tiles of your choice

OSB subfloor

Tile backer board (cement backer board or mesh backer board)

Thinset mortar

Grout

Notched trowel

Grout float

Tile spacers

Level

Rubber mallet

Steps:

1. Preparation:

Begin by ensuring that your OSB subfloor is clean, level, and free from any debris or imperfections. Use a level to check for any uneven areas and make any necessary adjustments using a sander or planer. If needed, apply a layer of self-leveling compound to create a smooth, level surface.

2. Install the Tile Backer Board:

Install a tile backer board over the OSB subfloor to provide a stable and moisture-resistant base for your tiles. Use cement backer board for wet areas like bathrooms or kitchens. For other areas, mesh backer board is sufficient. Secure the backer board to the OSB subfloor using backer board screws, spaced approximately 6 inches apart.

3. Apply Thinset Mortar:

Spread a layer of thinset mortar over the tile backer board using a notched trowel. Hold the trowel at a 45-degree angle and apply the thinset in a uniform layer, creating ridges for the tiles to adhere to. Use a flat edge to remove any excess thinset.

4. Laying the Tiles:

Carefully place the tiles onto the thinset, pressing them down firmly with a rubber mallet. Use tile spacers to ensure even spacing between the tiles. Check the level of each tile as you go, making adjustments if necessary.

5. Grouting:

Once the tiles are set and the thinset has cured according to the manufacturer's instructions, apply grout to fill the gaps between the tiles. Use a grout float to spread the grout evenly and force it into the spaces. Remove any excess grout with a damp sponge.

6. Sealing:

After the grout has fully dried, apply a sealant to protect the grout and tiles from moisture and stains. Use a brush or sponge to apply the sealant evenly, following the manufacturer's instructions.