Dress a stone wall with tiles

To install tiles on and on a stone wall, the first question is whether they are fixed directly or with substructure. When directly fastened by the joints in the masonry adhesive-free cavities. They must be filled accordingly. Note also the weight of the tiles and the durability.

Adhesion and water resistance

There are several reasons why a stone wall is covered with tiles. In addition to a general beautification of the stone wall tiled surfaces allow easy cleaning. Any problems caused by moisture and weather conditions are solved with ceramic tiles.

Two main aspects play a major role in planning and preparation:

1. The adhesiveness of the vertical mortar bed must be ensured
2. No water may penetrate at the termination points of the tile surfaces

Prerequisite perfect dryness

The different types of stone that make up a wall have very different characteristics. If a stone wall consists of mixed rock, a substructure with top plate is recommended as the basis for tile installation.

Depending on the type of stone, the appropriate primer or primer must be selected. Since normally-durable tools are almost always diffusion-sealed products, the stone wall must be completely dried out.

The application of tiles may only be done in dry weather, which will last for at least a few days. Any traces of moisture such as efflorescence or mold are removed. If residual moisture is to be expected inside the wall, a professional renovation must be carried out. Otherwise, after the tiling, it is likely that the stone wall and the mortar will decompose internally.

Finishes, joints and edges

If a stone wall is not completely tiled and grouted, particular attention must be given to the laterally open edges of the mortar. The bare mortar forms the weakest element of the tiled stone wall. An upwardly watertight seal prevents rinsing by precipitation.

Corner profiles can be applied to the lateral mortar edges. Alternatively, the joint between the tiles can be continued at the edges. Attention must be paid to the adhesiveness of the grout to mortar. The joints in a stone wall are filled before tiling. Veneers or stabilizing inserts made of slate tiles help with joint attachment.

Tips & Tricks

If you are not sure about the complete dryness of the stone wall, you can perform the tile back-ventilated on a substructure. So your stone wall remains diffusible.

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Video Board: How to Cover a Concrete Wall with Stone Veneer - This Old House