How to insulate the foundation of the house from the outside

The question of how to warm the foundation of the houseoutside, is very relevant for private homeowners. Through a poorly insulated foundation, the house loses heat and quickly collapses under the influence of the environment. Therefore, it is necessary to insulate not only the roof, walls, window frames, but also the foundation of the house. After all, up to 20% of the heat leakage occurs through it.

Different kinds of heaters

The foundation is warmed from the outside using various materials. It can be:

  • expanded clay;
  • Styrofoam;
  • expanded polystyrene;
  • mineral wool;
  • polyurethane foam.
  • The technology of work with various kinds of insulation,the main characteristics of the material, the regional climate and humidity level, material costs are the main parameters that must be taken into account when choosing a heater for the foundation of a private house.

    Thermal insulation with claydite is a cheap and simple waywarming, however, very laborious. Under the expanded clay along the perimeter of the house a trench with a depth of up to 1 m and a width of up to 0.5 m is needed. The claydite is poured and leveled by hand.

    Mineral wool is a material with high hygroscopicity. Therefore, to protect it from moisture and freezing requires the device of a special frame.

    Polyurethane foam has excellent technicalcharacteristics. However, the foundation can not be insulated with the help of this material. For work with polyurethane foam special sprayer and sufficient skill to work with it.

    Polyfoam is inexpensive, it is not difficult to work with it, but many owners refuse such warming. After all, the foam plastic is hygroscopic, resistant and quickly deteriorates, requiring replacement.

    Styrofoam - a modern tile material, which quickly gained popularity, thanks to such qualities as:

  • durability;
  • water resistance;
  • increased strength;
  • ease of processing;
  • simple fixing and installation;
  • acceptable price.
  • Foundation insulation with expanded polystyrene: preparation

    Solve the question of how to insulate the foundation of the housepolystyrene, begins with the calculation of the required amount of material. The thickness of polystyrene boards is selected depending on the region in which the house is located. For example, for regions with a moderately cold climate, the insulation layers can be 5 to 8 cm thick. To work with expanded polystyrene, the following set of tools is needed:

  • perforator;
  • a drill with a length of 150 mm and a diameter of 1 cm;
  • mixer for construction;
  • concrete mixer;
  • dowels with poppet head;
  • hard roller;
  • a hammer.
  • From materials it is necessary to prepare:

  • primer for concrete based on latex;
  • adhesive for expanded polystyrene;
  • mounting foam;
  • reinforcing mesh;
  • sand and gravel;
  • mixture of sand and cement (mortar);
  • finishing coating;
  • adhesive for fixing the finish.
  • On the waterproofing should be said specifically. It is best to use self-adhesive web material based on polymer. If the use of a coating is expected, it must be ensured that there is no bitumen in its composition. This can destroy polystyrene.

    Description of work

    The foundation of a new house begins to warm at onceafter erection. The foundation of the finished structure is dug around the perimeter. The minimum width of the trench is 1 m, the depth is up to the lower level of the foundation. The outer surface must be dry and thoroughly cleaned from dust and debris.

    For a house standing on very wet soil,drainage is necessary. Therefore coarse-grained sand is covered in the trench, which is covered with geotextiles. Then - a layer of gravel and perforated pipes (diameter - 10 cm), wrapped with geotextile. They are led to a specially dug collector hole. The top layer is sand.

    The walls of the foundation are primed. This will level the surface and ensure good adhesion. Then the waterproofing is laid and leveled by the roller. Joints are protected by a sealant.

    Plates of expanded polystyrene are lubricated by specialglue and are lapped over the waterproofing. The plates are joined through special grooves at the joints. With a large height of the base of the house, the slabs are placed in several rows with a shift so that there are no long vertical joints. Minor laying errors and gaps are eliminated with mounting foam, glue or sealant.

    To insulate the soil layer,gravel cushion to the top of the soil. Next, the insulation sheets are attached to the base of the house by dowels with a plate-shaped bonnet. They are hammered into specially drilled grooves. For 1 sheet, 4 or 5 dowels are enough.

    Over the gravel cushion is required blind area. Under it, formwork with a width of 60-70 cm is laid over the insulation of the gravel and the reinforcing mesh. Pour concrete. Once it has hardened, the formwork is removed.

    Further it is necessary to put plaster underfinishing material. In the plaster you need to drown reinforcing mesh. After 2 - 3 days, you can begin to finish the foundation. For a more detailed study of the issue, you can see the video of the foundation warming.

    House on stilts

    Particular attention should be paid to insulating the housepile-screw foundation. Such houses can be built on almost any soil, regardless of the regional climate. A big advantage of this type of building is protection against deformation by groundwater. In this case, the load on the soil under the weight of the house is partially transferred to the lower layers of the soil, which have an increased density.

    Warming of the pile foundation shouldmust be done without fail. After all, these houses are often built in cold regions. Therefore, the floor in the house remains cold due to the constant circulation of cold air in the open space under the floor.

    When the pile foundation is very high, the distance from the upper edge of the ground to the lower floor level is too large. In this case it is better to insulate the floor from the outside.

    External insulation of the pile foundation is doneon the perimeter of the structure. In this case, under the house a skeleton base is erected from the upper edge of the ground to the underside of the walls. The heater is laid on top of the frame. Then it is lined. In this way, the foundation is usually warmed, raised above the ground to a small height.

    Waterproofing pile foundation is required forprotection against atmospheric moisture joints piles and grillage at home. This will protect metal elements from corrosion, and wooden ones - from decay. The moisture insulator is placed on the upper ends of the piles and the upper edges of the grillage, which are in contact with the walls. Usually, a ruberoid is used for this.

    After this, the wooden components of the structureimpregnated with antiseptic, and metal parts are covered with a special mastic. In a week, when the protective coating dries, the insulation of the pile foundation begins.

    Around the frame socle you can put a lightwall in half a brick. Such a wall is erected over a reinforced cement foundation. It is poured into a special shallow ditch dug along the perimeter of the building.

    Finishing: Profiled sheeting, decorative panels or siding, hung on piles. To do this, on the piles have guides from metal, which then fasten the finishing panels. Additional fastening is a special adhesive for the selected material. Corner joints of panels are installed corners and droppers.

    Much more reliable insulation of the foundation penokleksom. It is laid on top of a concrete or brick plinth. The surface is cleaned, dried, primed. Penoplex sheets are fixed with a special glue in 1 or 2 layers. The seams between the sheets are sealed. To protect against small rodents, a mesh of metal with small cells is stretched over the sheets of the penoplex. To protect against condensation formed in the inner space of the cap, it is necessary to make ventilation openings on opposite sides.

    Floor of a house erected on a high pilefoundation, is insulated as follows. Outside, a vapor barrier is attached to the floor. The next layer is a heater. Over the insulation requires planking of the boards. Additionally, it is possible to conduct the insulation in the manner described above. In this case, the insulated floor becomes the ceiling of the basement.

    Warming the foundation of a private house is betterconduct, using a reliable modern heater. All additional costs will pay off very quickly. After all, a house with a warm foundation will be protected from deformation under the influence of atmospheric phenomena. Heat in the house will be well preserved, it will save on heating. Living in a warm house is much more pleasant and safer for health.