The black shook the floor is different from the finishing the fact that some flaws are allowed when pouring it, it should not be perfectly smooth. It is done in order to level the large differences in height and create a base for the final coating. A draft floor without a tie is a wooden flooring, which serves the same goal.

Routing

In order to independently make a screed need to take the following steps:

• determine the floor level and install beacons;
• prepare the base under the fill with the solution;
• prepare a solution;
• pour the cement-sand mix;
• control the status of the screed in the first few days.

Installation of Mayakov

Before proceeding with work, it is desirable to cleanse those sites on which they will be located. The installation process is performed according to the following scheme:

• Along the wall, in line, at a short distance from it and from each other, we have a bunch of cement-sand mixtures.
• From above on them we put a construction lighthouse. Also, a metal profile or a suitable diameter tube can be served as a lighthouse.
• After the profile is laid on a handful of a solution, you need to push it a little, slightly drowned. When the lighthouse is plunged into the height of the required height and reaches the required level of the plane, fix it with the help of additional portions of the solution.
• Under the required lighthouse height, this position is meant when the upper edge is located at the level of the estimated surface of the screed. The height of this level may vary depending on how planning we plan.
• In order to make it easier to install the first lighthouse, we screw into the overlap of two self-proofs, and on them, on the necessary height we stretch the fishing line, which later align the lighthouse.

Next, we act likewise until the lighthouses are installed throughout the room, and the last one should be located opposite the first one. To subsequently facilitate control over the level of the screed, the necessary height mark the marker on the walls.

Preparation of concrete base for the beginning of work

In order to ensure the hitch with the base, before making a black tie of the floor, the procedure should be carried out by the procedure of its preparation consisting of three stages:

• Alignment. This procedure is filling with a solution of all depressions existing at the base;
• Cleaning. Before starting any work, it is necessary to clean the working surface from pollution;
• Primer. To ensure a good hitch, the base surface must be primed. The procedure should be described in detail in a jar with a primer.

All wooden parts, for example, jambs of doors, it is necessary to protect against contact with cement, using film and tape. On that length of time, black works will be kept, all holes should be closed by traffic jams. Before hiding in the screed of the wires and pipes, they must be fixed on the base with the help of a dowel, pre-wrapped with insolon.

Preparation of solution

Very economical is such a design as a black bass. The price of components from which the solution is manufactured for it is small. Most often it is made in proportion 1/3. This means that on 1 part of the cement take 3 parts of the sand. The water added to the mixture is taken at the rate of 0.5 / 0.55 per 1 kg. cement. If you add it more, then the solution will be less durable, and it will not correspond to construction standards. In compliance with the proportion, the mixture will be plastic and homogeneous. To cook it to be preparing:

• soviet shovel;
• large capacity or concrete mixer;
• buckets;
• gloves and overalls.

Pouring a rough screed

In this process there is nothing complicated, and anyone will cope with it without difficulty. I spread the solution with a shovel between two lighthouses, a little higher above them. Further, the Rake rule is put on two neighboring lighthouse and carry out the wave-like movement towards themselves, removing the top layer to the noted level. If the rules are formed under the rule and not filled places, then the solution is reported and repeatedly aligned. The rest of the plots are flooded in the same way, take turns to clean the lighthouses and filling empty places with cement mixture.

There are several tricks that will allow you to make a job better:

• so that the lighthouses did not curb during the layout of the solution, a few hours before the start of work, fill all empty places under them with a mixture;
• cement mixture prepare in small parts to have time to put it out and dissolve before it starts to harden;
• fill the tie indoors is better for one day so that the surface is more uniform.

CONSTRUCTION OF THE CONTRY OF THE CRY IN THE FIRST ABOUT DAYS

In the process of drying, the screed can give a shrinkage, in connection with this, at first it is necessary to look after it:

• During the first day, it is not allowed to walk in the screed.
• The room is required to darken and eliminate the presence of drafts to create in all its parts the same microclimate during fluid evaporation.
• A day later, the screed is required to cover with the film and then wait for the complete hardening, which will come in 2-5 days, depending on the thickness of the overlap.

As mentioned above, the draft floor should not be perfectly smooth, but this is only if it is needed, to smooth the large height drops. In that case, if a rough screed is planned for a warm floor, it is necessary to align it very carefully. The fact is that this electrical device is laid between draft and finishing cement layers. If the primary layer is not well aligned, then the finishing coating will turn out in different places, different thicknesses and will not warm evenly.

The black shrewing of the floor on the soil is an economical, but very laborious option of the floor. The sand is poured under the layer of cement-sandy solution, they are tamped, and rubble fastened from above. Screed, poured on crushed stone, never wakes up and does not crack.