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When preparing to lay a new tile, parquet or carpet, it is important that the floor is perfectly flat and that there are no gaps or cracks. It is therefore sometimes essential to patch up. It is an operation which consists in leveling the ground to eliminate imperfections and differences in levels. Find more articles on the theme: Quote work for a tiling installation
How do you know if the floor requires patching?
One of the methods for determining whether patching is essential is to pass a long ruler across the surface. Then measure the spaces between the ruler and the floor. If they exceed 7 millimeters, you must level the surface before laying a coating.
Smoothing: for what types of soil?
Smoothing can be carried out on several types of surface, provided that they are hard. It is therefore possible on cement, concrete, plastic tiles, tiles, parquet, painted floors, etc. However, it is not possible on carpet or flexible tiles.
Prepare the soil to be leveled
The floor to be leveled must be clean above all: a vacuum cleaner for dust and a solvent for grease stains on the tiles. The friable parts on a cement floor must be erased using a spatula or a squeegee. For tiling, make sure all the tiles are in place. Otherwise, they must be sealed. It is very important to dry the surface well before leveling it. To make sure that your soil does not produce moisture, you can stick on a piece of flexible and transparent plastic. If water droplets appear after a certain time, it is because it is wet. In this case, do not embark on a patch without going through a suitable treatment. Porosity is also a criterion to take into account. Your soil is normally porous if it takes between one and ten minutes to absorb a few drops of water.
The stages of patching
After checking the condition of the soil, apply a bonding (or adhesion) primer. This product will allow better adhesion of the coating. Let dry as much as necessary. During this time, you can prepare the leveling compound, according to the manufacturer's instructions. A self-leveling mortar is perfect for a surface that does not have significant differences in level. This product has the advantage of spreading easily. For more irregular soils, a leveling mortar should be favored. Make sure to mix a sufficient amount of product. The plaster must be liquid enough to be able to penetrate holes and cracks. Distribute it over the entire surface, taking care to finish by the door: in this way, you will not walk on your plaster! It must be passed quickly and all at once, because it dries quickly. Take a trowel to smooth it out. If you think a second coat is necessary (i.e. if the floor still has irregularities), let it dry for about three hours and then start again. The new coating can be applied three days after leveling.