Screed floor. Under the warm floor screed by own hands

Modern renovation involves the alignment of not only walls, ceilings, but also floors. In the latter case, you can not do without a screed.

What is a floor screed?

Many who have not experienced repair in their lives ask this question. The floor screed is a layer of the building mix that is applied to the floor base. As a rule, tiles or some other types of coating are laid on top of the screed. Exceptions are industrial buildings, where this layer of construction mixture serves as a finish coat.

The floor screed can be stacked evenly horizontally, and at an angle. In the latter case, this is usually done under the drainage of water. It is worth noting that here is not excluded screed under the warm floor.

This method of leveling helps not only to raise the floor level to the desired mark, but also to increase heat and waterproofing. In addition, if you started a renovation in the bathroom, then with this simple method you have a unique opportunity to hide all the communications on the floor.

Special attention should be paid to the floor screed under the warm floor.

What is it for?

As a rule, it is done in cases where it is necessary to perfectly level the surface. For example, in the construction of multi-storey houses, concrete slabs are laid in such a way that their smooth sides become ceilings, and those that have all kinds of flaws or protruding fittings - floors. And everyone understands that in this case, you can not put a finishing floor covering (linoleum, laminate, etc.).

Recently, the floor screed under the warm floor is increasingly in demand . This kind of surface on which we walk creates comfortable conditions for living. Thanks to the pipes or pipes hidden under the layer of building material, the heat enters the room.

Talk about the benefits of a warm floor can be a long time. Let's consider what types of screeds are suitable in this case.

Varieties

If you go in step with the times, then without a warm floor, you probably will not get along. But on what kind of screed to stay? Indeed, the question is very relevant. After all, today in building stores you can find a wide variety of these mixtures. Let's talk about each of them.

• Wet kind of screed is the strongest base under the floor. In most cases, it is used in production facilities. For the final result, more than one day is needed. This solution dries very long. Its only advantage is a low price.
• Semi-dry form of the screed is more popular in apartments. It contains a large amount of sand and little water, which allows the solution to solidify quickly.
• Dry type screed is universal. From the title it is clear that in the process of its installation water is not used. The floor is leveled with a special dry mixture, which then spreads the sheets of plywood.
• The self-leveling screed, or the floor , is applied to the floor, then it is distributed evenly over its surface.

Now you see how many species the floor screed is divided into. Under the warm floor, according to experts, the three latest options are more suitable.

Which is better to choose?

Screed under the warm floor should be not only smooth, but also ideal. From its quality depends the work of the built-in heating elements under the cement layer. We have already mentioned that the optimal solution for warm floors is dry, semi-dry and self-leveling.

Screed under the warm floor should withstand constant temperature changes, be strong and have a high thermal conductivity, so experts came to the consensus that the ideal option in this situation is a semi-dry mixture. It is also worth noting that the application of this solution is quick and easy. To complete it, you need a day. Therefore, after 24-30 hours you can already make a finishing floor.

You can also make a warm floor under a dry screed. But in this case fixing sheets should be made of concrete material.

Scheme of floor water heating for screed

Qualitative screed under the warm water floor assumes not only the knowledge and skill of its installation, but also the use of modern materials. We will emphasize that this applies not only to the solution itself, but also to heat-insulating materials. So, before proceeding with the installation of the warm floor, make sure that you have the following items in place: mounting mats, heating pipe, manifold system, water heating boiler, automation system, insulation tape and screed material.

The first thing you need to put under the screed is an insulation tape. It has good heat and sound insulation. It is laid heat insulation mats with guiding water pipes, next to which is the main properly assembled heating pipe.

This is how the installation of a warm floor looks. After all of the above points are met, the system of the water floor can be poured with a solution.

How to prepare a semi-dry mixture by yourself?

You can prepare it yourself. To do this, you need to buy portland cement (grade 400) and clean river sand. In addition, you will need water, a container in which you will mix the solution, a trowel and a small shovel. Today, professional builders recommend adding fibrefiber to the screed, which is an analog of reinforcement.

So, mix all the dry ingredients until a homogeneous mass is obtained and add water until the solution is stuck together. Kom must keep a shape, and moisture in this case should not be allocated from it.

Installation of the screed on the water floor with your own hands

As we have already said, the screed under the warm floor electric or water is laid according to the technology of "semi-dry screed". For greater strength, 1 liter of plasticizer is added per 1 cubic meter of mortar . To get acquainted with more detailed information about the dosage you can on the screed package.

Reinforcement of a semi-dry screed is performed with polypropylene fiber (from 13 to 20 mm). As a rule, to the place of installation it is supplied by a pneumatic heater.

Due to the fact that this type of solution contains a minimum amount of water, it dries very quickly. Therefore, a semi-dry floor screed under the warm floor should be done at an accelerated pace. Please note that the mortar should grasp the base well. Otherwise, after a short time your screed will swell. The thickness of the screed under the warm floor should not exceed 4 centimeters. Only in this case you can prevent this problem. If there is a need to raise the floor level, first pour a layer of expanded clay or fill the surface with expanded clay, then apply a semi-dry mixture and level it.