Although natural slate is a durable flooring material, it is possible for individual tiles to become chipped, cracked, or scratched. In the case of chipping and cracking the problem is often caused by the adhesive layer beneath the tile becoming uneven. Scratches are usually caused by external forces acting on the surface of the material. In many cases it is impossible to repair damage to individual tiles requiring the entire piece to be replaced.
This project will walk you through the steps required to remove the broken tile, repair the surface beneath it, and then replace it with a new piece. The photographs shown are of a solid gray slate with a natural clefted surface installed on a concrete underlayment. These instructions should be valid for all basic slate tile flooring installations.
Difficulty Level: Moderate
Time to Complete
1-2 Hour Labor 24 Hours Drying Time for adhesive and grout.
Carbide Tipped Grout Saw
¼” Notched Trowel
Piece of 2x4 Hardwood
Needle nose Pliers
Natural Stone Sealer
Matched Slate Tile
Note on matched materials: Slate is a natural stone so the exact color of any given type of tile is variable, which can make it difficult to find a piece that fits the rest of the floor. Finding a matching grout can also be a problem. If possible you should hold on to a few extra tiles, as well as some grout after the installation of a new slate floor.