Leveling and repair compounds

Compounds intended for levelling the substrate (wall or floor) and creating a good surface for coating.

Substrate

Floor and wall coverings require a strong, level and smooth surface beneath them. Under certain conditions, the levelling compound can also be left uncovered; however, the surface must be that much stronger.

Function

The mira levelling compounds are used for levelling wall or floor surfaces and creating a substrate with good adhesion to the coating. The screed must provide the substrate with a suitable shape and flatness, while ensuring sufficient strength for the finished surface to withstand the load placed on it. The screed must also adhere to the substrate, to ensure this, the substrate must always be primed with a suitable primer before applying the screed.

Self-levelling compounds

Self-levelling compounds are suitable for levelling mineral substrates like concrete.

Fiber-reinforced compounds

The fibre-reinforced compound mira x-plan is also suitable for levelling wooden floors and building the slope for draining water in wet rooms.

Repair compounds

Repair compounds are suitable for quick repairs of vertical and horizontal surfaces. Coarse-grained mortars can be used in a thicker layer, with fine-grained mortars can be used to create a smoother surface. Wall plasters do not have to withstand a load that is comparable to that of the floor, instead it is important that they are easily installable and sandable. Most mira levelling compounds are quick-setting, which allows the finishing works to continue after only a few hours have passed. When working outdoors, the whether must be taken into account: in addition to temperature fluctuations, the surface also gets wet. Water and low temperature together cause frost damage. Under such conditions, products that are suitable for outdoor use must be used.

Priming

Levelling compounds always require a primer underneath. Absorbent surfaces must always be primed using the mira 4180 primer, which is diluted with water, based on the absorbency of the substrate. Non-porous substrates (metal, enamel, glaze etc) require the two-component mira 4140 contact primer.

Mixing

Levelling compounds must be mixed with lukewarm water (exact ratio shown on the packaging). The mixing vessel must be round, with a capacity of at least 1 L per kg of powder to be mixed and with a diameter that is not too large. A spiral mixer with a reinforcing ring and a mixer with a speed of at least 700 rpm are suitable for cement-based levelling compounds. Water is always poured into the mixing vessel first and the powder is poured on top of the water. The mixture must be vigorously mixed for at least two minutes, allowed to stand for one minute and then gently mixed again. Before pouring the self-flowing compound onto the floor, it should be allowed to sit in the container for another minute.

Coating material

Levelling compounds require the use of a covering (parquet or ceramic on the floor, ceramic or paint on the wall, etc.). The coating must give the surface a suitable level of abrasion resistance and a nice appearance.

Products