Tile masonry

Tiles are the classic wall covering in different rooms. Masonry is the typical underground. But to keep tiles on masonry long term, the substrate must be determined. Here are some methods of strength analysis to make masonry tile a long-term success.

Dry construction versus masonry

In recent buildings, the interior is now mostly made in dry construction. As you tile a drywall, you can read here in detail. Of course, there is also conventional wet masonry. Especially in the rooms, where mainly tiled, so kitchen and wet rooms, brings numerous advantages such as a high load capacity of the masonry with it.

Check masonry for load-bearing capacity for tiles

However, depending on the age of a building, the masonry can be very different. Therefore, it is important to study the surface of the masonry before tiling the walls. There are various techniques available that can be easily implemented:

  • the wipe test (texture of the surface of the uppermost layer)
  • tapping the wall (as firmly attached to plasters or other coatings)
  • the scratch test (adhesion of paint layers, cleaning)
  • Absorbency test (how little or very absorbent the surface is)

The wipe test

Maybe you have already experienced it. There are wall surfaces that literally chalk when you stroke them with your hand. Tile adhesive is very poor on such a surface. If the masonry chalks strongly, the coating should be removed (sanded) until no more chalking is detected. The basic nature of coatings such as paints or plasters can thus be checked.

The tapping of the wall

Tapping the wall with a small hammer goes deeper into the substance. Bursting pieces by tapping, the plaster does not stay on the ground. If this is the case only in some places, the poorly adhering plaster can be removed and replaced with repair mortar or tile adhesive. If the plaster is generally only very poorly adherent, it is recommended to remove the coating completely.

The scratching test

Masonry coatings can be multi-layered: plaster base, top coat, decorative plaster, paint. Squares of 1 x 1 cm are scratched into the wall with a carpet knife. If the corners break off at the intersecting cuts, the coating will not adhere well and should be applied before laying the tiles.

Absorbency test

If the substrate is found to be good for tiling, its absorbency must still be estimated. Simply spray water onto the wall. Wicks off the water, the surface has virtually no absorbency and a primer must be applied. However, if the water absorbs almost completely or even completely, the absorbency is extremely high. Then the masonry must be pretreated before the tiles with a depth of ground.

Tips & Tricks

Masonry is usually tiled in rooms with higher demands such as kitchen or bathroom, toilet, etc. Therefore, the tile adhesive should be selected accordingly. With a plastic-coated tile adhesive you are always right and ensure a long adhesion even without tension cracks.

Product Image: Dmitry Kalinovsky / Shutterstock

Video Board: Tile Installation on Brick Wall Process, Part 1