Insulation of the foundation with expanded clay inside and outside

Insulation of the foundation with expanded clay inside and outside Warming the foundation of the house with expanded clay with your own hands

With proper and correct use, this type of insulation of the foundation of the house with expanded clay can increase the operational life of the house for a very long time period, preserve the structure of the building, and reduce the impact of external forces. We will talk about all this in the article.

Also, experts use this classic method of insulation, as a separate type of thermal protection, and when combined with more modern building materials.

General information

Is it expensive?

In this case, a very careful and multifaceted calculation of the consumption of expanded clay is carried out so that the work performed is not only effective, but also cost-effective and less labor-intensive.

Based on the design qualities, the cost per cubic meter for the foundation device may vary, depending on the type of foundation, the degree of its insulation, arrangement of basements and the first floor.

At the same time, the question of the competent use of finance will always be one of the main issues in the preparation of documentation.

Warming the base by means of expanded clay - the reasons for the popularity

Materials of natural origin have always been used for thermal protection of foundations of houses for various purposes, and even more so after it became certain it is known that tangible losses will occur precisely through the soil and foundation. The search for an effective remedy could lead to the fact that expanded clay very quickly began to be used to perform the functions of an insulation material, and in this its physical and chemical qualities could play a tangible role. warming the base with expanded clay is still very popular, even without taking into account the laying features and the need to purchase a huge amount of building materials.

The reasons for this choice are more than obvious:

  1. Insulation of the foundation with expanded clay inside and outside Availability of building material - its cost is quite low, which makes it possible to buy the required volumes of insulation material for the construction process.

  2. Naturalness - fully natural components can provide safety for the earth and the very foundation. The material will not react with organic and chemical substances, and will not release harmful substances into the soil and atmosphere.
  3. High sound and thermal insulation - due to the presence of air cavities in the structure, the material will reduce heat exchange between the external environment and the room. When laying the insulation material, cavities still appear between the granules, which even more begin to increase the functions of thermal protection.
  4. Not exposed to any influence - expanded clay is not susceptible to fungal formations, mold, decay.

    Expanded clay is not attractive to rodents, insects and other pests, which is very good for the substrate.

  5. Durability and strength - expanded clay does not begin to change its properties after a while, retains its original technical parameters. But provided that its filling was carried out in accordance with all the rules that must be taken into account by specialists during construction and design.
  6. Convenience of work is not the last factor that affects the popularity of this material. It is very lightweight and you can work with it with simple means, like shovels.

    Backfilling is carried out both directly into the trenches from a truck or as a sequential process using manual work and a wheelbarrow.

Now let's look at different methods of the insulation process.


Insulation outside and inside

One of the reasons why such material was recognized as one of the The best thermal insulation method is its wide range of uses. Expanded clay is used so often and in huge quantities that it is considered one of the best methods for protecting the foundations of country houses.

Features of insulation outside

Improvement of a protective type circuit outside the boundaries of the cottage foundation is the most popular and at the same time effective method of insulation for a country house, because it has certain advantages that contribute to the creation of a multilevel type of protection.

If the foundation is insulated with expanded clay from the outside, it will provide:

  • Insulation of the foundation with expanded clay inside and outside Preservation of the foundation structure from external aggressive impact - the material will remove excess moisture from the ground, and in conjunction with the drainage system makes it possible to create a highly effective means of combating heaving.
  • Provide thermal insulation of the underground part of the building, as expanded clay has a very low rate of heat exchange.
  • Absorbs buoyancy and overturning forces that will necessarily affect all types of foundations. The expanded clay layer takes on all the load from the outside, both from the side of the ground and from the side of the cottage. By spraying directed forces, it completely neutralizes them, and as a result, the house structure is practically not exposed to external influence.

  • Provide reliable protection against insects, rodents and does not spread any vegetation inside, because baked clay is far from the best means for forms of a biological type.

The material has certain requirements for the process of the technological type. Taking into account all the advantages of the building material, you need to remember about rational use - for example, when creating the basement space and the basement floor, it makes no sense to backfill a full-fledged layer of expanded clay, which will be very expensive, because a lot of raw materials are required. It is much easier to make insulation from expanded polystyrene or polyurethane foam, and then make an expanded clay layer with a width of about 0.2 to 0.

3 meters.It turns out that the thermal insulation properties will be very high so as not to insulate the floors and not to make a thick layer inside the finish.

In case of shallow bedding of a slab or strip type base, it is required to make a layer of expanded clay, based on the required characteristics of thermal insulation. Experts strongly recommend making trenches with a width of 0.6 to 0.

8 meters. You should not do less, because the material is not able to provide the required level of insulation, and if you do more, you will get a useless waste of material, which does not affect the quality of thermal protection in any way.

When calculating the backfill, you need to remember about:

  • Shrinkage of the material - to provide a sufficient margin for further backfilling.
  • Waterproofing of the sides and bottom of the trench - carried out with simple polyethylene or thin layers of waterproofing material.
  • Creation of an upper blind area of ​​concrete to prevent moisture penetration from the atmosphere.

The price of a turnkey pile foundation usually does not include the possibility of using expanded clay insulation, because it is useless to use it for supports, and grillage parts are much easier to sheathe with any other materials. Other types of bases can be perfectly insulated with expanded clay, subject to technology and backfill rules.

Please note that expanded clay can absorb a lot of water, and then retain it, and therefore it is not recommended to use it on marshy soils, in soil with a close location of the aquifer, and even with a predisposition to waterlogging. Ensuring the waterproofing of the expanded clay layer is a necessary condition, without which all insulation works will be completely useless.

Features of insulation inside

One of the methods of insulation of the material, when it is not possible to carry out work outside the building, or the owner makes a more reliable and powerful circuit thermal protection.

Let us immediately make a reservation that, according to the experience of specialists, it can be argued that internal warming by means of expanded clay is carried out only in tape bases with a shallow bed. Only in this case can more or less optimal conditions be created under the floor on the ground floor. In other options, the internal type of backfill will not improve the characteristics of the building, but only add even more weight to it.

It should also be remembered that insulation of the foundation with expanded clay from the inside for elite mansions and houses with a spatial layout, where the base occupies a very large area, internal insulation is not entirely profitable. If you imagine all the volumes that will need to be poured to the floor level on the first floor, so that there is no free space, this will be a colossal waste.

Our experts advise using internal insulation by means of expanded clay on very strong stony lands, with a strip base depth of up to 0.6 meters, for houses that will not occupy a huge space in terms of plan, somewhere up to 15 * 15 meters.This is convenient in narrow areas or when building in cottage towns with a dense type of building.

Insulation of the strip base

The most popular type of base will have a variety of protective options for its design, and providing thermal insulation. As already mentioned above, with this design of the base of the cottage, it makes sense to carry out full-fledged insulation with expanded clay with a shallow structure.

If the height of the underground building part is from 1.2 to 1.5 meters, then you need to choose a combined method - polyurethane foam, reinforcing mesh and expanded clay backfill. This will be more cost effective and efficient.

With a normal base height of 0.

6-0. 8 meters, you can backfill with cleaned backfill materials around the perimeter of the building, subject to all the rules for creating a heat-protective layer. The price for a strip foundation is usually calculated based on the insulation material you have selected. It includes the process of counting and creating documents, buying expanded clay from trusted suppliers, working on the ground, waterproofing and drainage, as well as backfilling and creating a blind area.

Insulation of a monolithic base

This method of protecting a slab-type base of your country house is very effective, because concrete in this mass is already a very reliable obstacle to strong heat exchange with the ground.

The creation of an insulating circuit around the perimeter makes it possible to protect the structure, and acting as a pillow, to dissipate external forces that invariably act on the slab base of the house. The cost of a monolithic base for a house with expanded clay insulation material does not differ much from the main cost. There are several reasons for this - the material itself, in comparison with the volume of concrete used, will be very cheap. Not so much expanded clay is required - a layer from 0.3 to 0.

6 meters is enough for a monolithic foundation to be provided with an appropriate level of protection from external influences.