An effective way to insulate a house is to install a penoplex under a floor screed. This material is ideal for such work, as it is quite durable and dense. Since the plates of this modern heater are ideally even, they can be used to make a screed, both in the classical way using cement-sand mortar and using self-leveling self-leveling floors.
Laying penoplex under the floor screed in the classic way
There are several foundations of the floor, which can be insulated with foam plaster. There is no significant difference on what the plates of insulation are stacked on. The main point here is the need for waterproofing devices under the penoplex. This applies to any type of substrate. The plates themselves can be laid without fastening or attached with glue or special screws with plastic washers. The joints between the plates are glued, sealed with foam or insulated with adhesive tape.
In any case, under the floor screed, the penoplex should be even, dense and covered with vapor barrier film. This rule applies to any way to create a heated floor. A classic concrete screed is a leveled and cured mixture of cement, sand and plasticizers. The larger the cement grade, the stronger the tie will be. Most often for these purposes they use portland cement M400. In order for the screed to turn out to be even it is necessary to follow certain rules. It is best to work together. One person kneads the solution, and the second performs the basic steps.
Then, when a vapor barrier membrane is laid on the plates of the foam plastic, it is necessary to take care of the contact points of the concrete and the lower part of the walls around the perimeter of the room. They must be isolated. To do this, take a strip of polyethylene foam and stack it along the walls with an overlap on them in the form of a corner. Polyethylene should be higher than the planned thickness of the screed. As a rule, take 12 – 15 cm.
Helpful advice! To make the film better fit to the walls, you can apply a primer on them. This will improve adhesion between materials.
When the insulation, vapor barrier and waterproofing the bottom of the walls are fully prepared, you can proceed to the main work. The solution is kneaded in a bucket or other convenient container. It is convenient to do this with the help of a drill with a nozzle. If it is possible to install a small concrete mixer in the house, it will be even better. Filling works begin to produce after leveling beacons are installed on the floor. This is done using a simple or hydraulic level. Pour the solution start from the farthest corner. When the first batch of solution is poured onto the floor and leveled with a shovel, then a reinforcing mesh is placed on it. This will not allow the screed to crack. Only then poured the next layer.
Fill produced between the guide beacons through one, so that with the help of the rule it was convenient to align the solution on them. All operations are repeated until the entire room is completely covered with a solution. The thickness of the screed should be from 5 to 10 cm. It depends on what kind of load is expected to give on the floor of this room in the future. Inside the screed can be placed the structural elements of the system “warm floor”.
Helpful advice! In the performance of work on the laying of penoplex under the floor screed and pouring mortar should go in soft shoes. This will prevent accidental damage to the material.
When all work is completed, it is necessary to periodically water the screed with water for 3 days. This will allow the cement to grab harder and achieve better hardness without cracking. After that, it is recommended to wait a few more days for the cement to finally turn into solid concrete, which can only be broken by a perforator.
After the concrete has completely hardened, you can proceed to the installation of a finishing floor covering. It can be absolutely anything: parquet, laminate, linoleum, or even an ultramodern self-leveling 3D floor.
To take a closer look at this case, let’s take an example with a concrete base. If the apartment is not located on the first floor of the building, then the thickness of the insulation may be less than 5 cm. This is quite enough. Before starting the main work on laying the penoplex under the floor screed, the old coating is completely dismantled. If there was a cement screed, then remove it with a punch. Then the floor slab is free from dirt and dust, close up all the irregularities and zapenivayut holes from utilities.
When the base is prepared, then foam polystyrene plates are laid on it, which are best glued to the adhesive composition. The joints between the plates, too, glue. Then put a vapor barrier film, on the perimeter at the junction with the walls lay a tape of polyethylene foam and prepare a solution.
Self-leveling solutions do not require additional actions on the part of the person to level them. It is only necessary to gently distribute the mixture with a needle roller over the entire surface. She will spread under the action of gravity and will flood the entire surface of the foam plate plates with a thin layer. Prepare the mixture according to the instructions. After pouring, it is necessary to wait only a few hours until the solution polymerizes and hardens to such an extent that it will be possible to lay the finish coat.
Helpful advice! If you plan to arrange a floor screed using self-leveling mixtures, then you need to know that the thickness of such a coating can be only 1 – 2 cm. Therefore, when creating the entire “cake” of the floor, you need to correctly calculate at what level the finishing coating will be.
The use of penoplex for floor screed solves two important tasks at once: leveling the surface and warming the floor. Both are solved successfully. Particularly smooth is obtained with the use of self-leveling floor. In addition, due to the small thickness, it turns out also easy.