If coolness emanates from the flooring, it will be extremely difficult to maintain an acceptable temperature in the house, this will require additional energy costs. This problem can be solved with the help of timely high-quality insulation of the foundation of the house from the inside.
Works related to the internal insulation of the foundation, in addition to minimizing heat losses in the house, will improve the ventilation in the basement, help reduce air humidity and prevent excessive condensation. Next, we will talk about how to insulate the foundation of the house from the inside with foam and other materials.
Choice of materials for internal insulation of the foundation
From a diverse list of building materials, most often for the purpose of finishing work on the insulation of internal foundation structures, different names are used. So what is the best way to insulate the foundation of the house from the inside?
Syntheticplates
Synthetic plates made of extruded polystyrene foam (foam or polystyrene are also used) are suitable for those who are thinking how to insulate the foundation of a wooden house from the inside with their own hands. Having a relatively light weight and a thickness of two to five centimeters, such plates can be in operation from twenty to fifty years. Styrofoam insulation does not emit toxic fumes, does not absorb water condensate, does not become moldy and, importantly for basements, cannot be damaged by rodents.
Foamed polyurethane foam
Foamed polyurethane foam, which is sprayed onto the inner surface of the concrete blocks of the foundation, is another material that insulates the foundation of the house from the inside with your own hands. Thanks to this method of application, this insulation penetrates into all cracks, cracks and voids, the surface treated with polyurethane foam is very smooth and has no seams. Of the advantages of this material, good sound insulation and thermal conductivity can be noted. The only drawback is that it should be handled by a professional, since spraying requires special protection against toxic fumes and construction equipment.
Expanded Clay
The most budgetary (economical) option for choosing a material for internal insulation is expanded clay. Expanded clay perfectly keeps an even temperature inside the basement, is not afraidhigh external frosts, is considered environmentally friendly. The material belongs to the category of refractory, does not lend itself to putrefactive processes.
Procedure for carrying out work on the insulation of the inner surface of the foundation
The technology of insulation measures directly depends on the category of building material previously selected for such work.
Before applying any insulation, the surface of the internal walls of the foundation should be, if possible, cleaned of adhering dirt or dust, plastered and treated with a liquid waterproofing solution.
The most expensive type of insulation work is the use of balloon polyurethane. The mechanism for such insulation is as follows:
- using factory-made cylinders, foamed polyurethane mixture is sprayed onto prepared surfaces;
- before applying it is necessary to wear a protective mask and goggles on the face;
- do not touch the applied composition for two or three days, while it is in a soft hardening state, so as not to interfere with its even distribution over cracks and voids.
The above method of internal insulation is not recommended for use in completely enclosed or poorly ventilated rooms and spaces, since polyurethane foam can emit dangerous toxic fumes.
The most convenient, simple to perform and at the same time effective is the method of insulating the foundation from the inside using polystyrene plates.
Technically, this process represents the following list of works:
- walls are cleaned, sanded and treated with a waterproofing compound;
- insulation plates are covered with a layer of cement mixture, similar to Ceresit, or with bituminous mastic along the edges and center;
- plates are fixed tightly to each other and fixed to the wall with dowels;
- voids between the laid slabs are filled with mounting foam or any other sealant;
- the surface of the plates is plastered and painted.
In order to increase the service life of such a heat-insulating coating, it is possible to additionally sheathe the plates with a reinforcing mesh (frame sheathing).
When using polyurethane or liquid polystyrene insulation to insulate the inner surface of the foundation, it must be borne in mind that in the event of combustion or smoldering, these materials emit highly toxic poisonous gases. Therefore, in buildings that are subject to increased fire safety requirements, it is better not to use these methods of insulation.
The most affordable method of basement insulation for private housing construction can be called the use of bulk expanded clay. It is quite possible to carry out such work on your own, having elementary skills.
Steps of work
The stages of warming the foundation with expanded clay clay are as follows:
- you will need ready-made wooden boards treated with a wood antiseptic, from which the formwork is knocked downthe dimensions of the perimeter of the inner basement, the recommended height of the formwork is about half a meter;
- slopes are made, the floor (as the first layer protecting against moisture) is covered with plastic wrap;
- second protective layer can be laid with mineral construction wool;
- expanded powder is poured to the height of the formwork.
Another bulk method of foundation insulation is known, namely, filling the basement space with earth to the floor level. However, this method of insulation will not be able to provide proper ventilation of the room and will require a very large tonnage of raw materials (land), which is very expensive.
Recommendations from experienced builders
As in any other field, some nuances and subtleties should be taken into account in construction, which will help to avoid mistakes when choosing the necessary materials and ensure long-term operation of structures.
When choosing a heater, experienced specialists recommend paying attention to the density of the material indicated during the sale: the higher it is, the weaker the heat-saving effect will be.
Maximum insulation of the foundation of the house can be achieved if load-bearing walls and partitions are simultaneously insulated, no uninsulated corners and joints are allowed, and through ventilation is provided.
When choosing an insulation method, you need to take into account the design features of your home, including whether there is a basement, how muchfloors in the house, the basement will be used as a functional room or access to it will be limited, as well as temperature conditions.
