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    July 2021
    P W S C P S N

    Preparation of the substrate for the elements of wall panels

    Cladding with wood requires paying due attention not only to the elements of the floor covering, but also for the preparation of the substrate. As a rule, none of the walls, nor ceilings, or floors, are not so equal, to be able to attach the grate directly to it. The unevenness of the lined surfaces can be of two types:

    - surface waviness, i.e.. garby, protrusions, performances etc.. (plane unevenness).

    - deviation of the plane from the vertical or horizontal (plane equal, but oblique).

    Plasterers' mistakes, fitters, concrete mixers, etc.. we have to fix ourselves, which is tedious and time-consuming work. Permissible plane deviations should not exceed ± 3 mm in length 2 m. Better to spend more time and attention when installing ceiling formwork, laying ceiling structures or bricklaying than bringing the planes to the vertical or horizontal. In this way, we will save a lot of time when installing carpets, which will more than cover the time losses incurred in the construction of the building.

    Plastering of base surfaces

    To plaster or not to plaster the surface before installing the floor covering? Views vary. Rather, we are leaning towards the simpler way, i.e.. not plastering under the carpet, even a scratch coat with a thin cement mortar. Plaster under the carpet is superfluous material and work. It is true, that the mounting strips adhere better to plastered surfaces, but this scarcity does not offset the higher cost and time investment, which is better to use for arranging the battens under the battens in the places of unevenness caused by bricklaying or pouring ceilings. We consider the installation of the grate and additional plastering of the surface between the grids superfluous.

    The method of preparing the grate for the ceiling

    To be able to determine the level of the future floor covering, find the lowest point on the ceiling.

    It is easier to insert the washer under the grate slats than to weaken them. We find the lowest place this way, that tight, We put a thin string on the ceiling in different places and in different directions, until we find and mark several places, which we find the lowest. In the same way, you can search for the lowest spot with a perfectly even wooden batten at least wide 10 cm and a length approximately equal to the length of the room.

    Using a spirit level with connected vessels, we will make a number of stamps around the perimeter of the room, which, when combined, will give a perfectly horizontal plane. As a rule, we apply these stamps at the level of approx 1 m from the floor. On this level, stretch the string from one wall to the other in these places, where we have marked a few lowest places on the ceiling. Then, using the strip, we search, measuring from ceiling to string, really the lowest place. Without a spirit level made of connected vessels, this operation cannot be performed. A simple spirit level for these purposes is not enough. We transfer the sophisticated lowest place on the ceiling to all walls, again using a spirit level with connected vessels. We mark the level on the wall approx 1 m. From these stamps, we measure the thickness of the grate from the square timber and thus we obtain the level of the lower edge of the assembly grate. Only this method of determining the plane guarantees a perfectly horizontally arranged floor covering without copying the unevenness of the ceiling.

    The method of preparing the mounting grate for the wall

    With an even slat, a few centimeters shorter than the width of the wall, we define a few of the most protruding places. By lowering the plumb line from them and reattaching the batten, we will define the most protruding place. All other support points of the mounting strips should be equipped with the appropriate thickness of washers.

    However, it is not always possible to obtain an exactly even plane. Connection with other elements, or adjacent planes, sometimes they require compromise solutions, or even subordinate it to existing building structures. Always consider in such cases, would it not be better to give up the alignment of existing planes, so as not to create new inequalities elsewhere.

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