bathroom floor screed

How to level the floor for laying tiles

Levelling the floor is one of the main steps in installing tiles. The performance and aesthetic appeal of the flooring depend on the quality of the work performed.

When preparing a floor for a tiling, first of all, a set of certain measures should be performed.

The general sequence is as follows

  1. Dismantle the old coating (if any).
  2. All fragments of the previous coating are removed, and the debris is removed.
  3. Dust is removed with a vacuum cleaner.
  4. If there are any voids (slots, channels, etc.), they are sealed, because if you leave them, then you will receive significant losses of the solution when pouring.
  5. For the best effect, it is advisable to wipe the entire floor surface with a damp cloth and let it dry. This achieves complete dust removal. True, it is impossible to start pouring the screed until the surface is completely dry.
  6. The base is primed with a special compound (primer) to increase the adhesion of the mortar to the base. In addition, the primer has some kind of waterproofing effect.
  7. The determination of the greatest differences in height is carried out and the setting of profiles – beacons using a laser level.
  8. At the end of the preparation, the room must be ventilated. Close windows and doors after ventilation. the screed does not favour drafts too much and the ambient temperature is below + 5⁰С.
  9. Floor Screeding

    The floor screeding is an intermediate layer that is located between the base and the floor covering. If the surface difference is between 3 and 10 cm, use a cement screed. For a relatively flat base, special mixtures are used to level the floor.

    There are two types of floor levelling compounds. Some need to be applied by hand, others – spread over the base of the floor on their own (self-levelling).

    The levelling mixture of the first type is diluted with water to the desired consistency. It is applied to the lighthouses with a metal spatula. The height of the screed layer should be between 10 and 30 mm.

    Self-levelling mixtures are made on a cement basis with the addition of plasticizing and reinforcing additives. Due to its special properties, the material spreads, forming a solid and reliable base. In the process of levelling the floor with a self-levelling mixture, beacons and levels are not needed, and a needle roller is required to remove air bubbles.

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