How to insulate the foundations outside

insulation foundation - an important and crucial phase of the construction and home renovation.Non-insulated foundation - is not only a major heat loss, but also the danger of freezing and subsequent destruction of the underground structures of the building.Warming foundation reduces heat loss outside several times, moreover, protects the foundation of the house from the effects of groundwater and low temperatures.

Why insulation on the outside of the foundation more effectively?

To understand this question, it is necessary to imagine the working conditions of the foundation.The foundation takes up a load from the side of the building and the soil pressure.The underground part of it is constantly exposed to groundwater and atmospheric water, while the porous material of the foundation can get wet, soaking up moisture.By reducing the soil temperature below zero freezes not only the soil but also wet basement.In the porous concrete cracks and chipped.In addition, it has a devastating effect and seasonal shifts heaving soils.These factors gradually led to the partial destruction of the foundation, and followed him to damage the walls of the building.

order to avoid the harmful effects of the environment on the foundation, resort to complex measures, and are two basic protective measures - a basement waterproofing and insulation.At the same time warming often make it outside, since the outer insulation of the protected premises are not only at home, but also the foundation.In some cases resort to the inside basement insulation, often when the external insulation is not possible.

Materials and Methods insulation foundation

There are several ways of warming the outside of the foundation:

• filling with sand or expanded clay.The oldest and inefficient method based on the properties of these materials remove moisture and create a layer of air near the foundation walls.
• Thermal insulation using styrofoam plates and its modern counterparts: Penoplex, polystyrene.
• Thermal insulation using mineral mats, followed by plating foundation shield;
• Spray foam on the surface using a special installation.The result is a seamless layer, resistant to mechanical damage with high thermal insulation properties.

filling with sand and expanded clay foundation

The advantages of the method include the low cost of the material and the opportunity to perform insulation of their own, without professional help.In addition, a layer of the filling at the same time is a waterproofing and compensate soil pressure at swelling that makes effective use of this method in wet clay soils with a high rate of frost heaving.

performance technology:

1. Prepare a pit on the perimeter of the foundation from the outside.Its depth should be slightly below the depth of the foundation of occurrence, and the width depends on the region and soil moisture.The lower the temperature in the winter months and the higher the level of ground water, the greater must be the pit.
2. At the bottom of the pit perform drainage: laid geotextile, gravel poured it on the rubble lay the perforated pipe and a layer of gravel again.Pipes connect into a single system and discharged into the well.
3. Foundation cleaned and dried, and then perform the waterproofing of the foundation.Select the type of waterproofing depends on the operating conditions of the foundation, but should be taken into account: the filling can not be used expanded clay surface waterproofing with bitumen or polymer compositions due to the possibility of damage to the waterproofing film.
4. the backfilling of the trench prepared sand or expanded clay, tamping it in layers.

Thermal insulation foam foundation and its analogues

modern and highly effective way to qualitatively insulate the walls of the basement.Advantages of the method - high thermal insulation properties of the material, ease of implementation of the thermal insulation material resistant to mechanical stress and damage, ease of finishing.Disadvantages - required surface preparation is the foundation layer of insulation protection from rodents, as well as suitable for this method of waterproofing.

performance technology:

1. foundation surface at full dig depth, cleaned and dried.On the surface is required to remove the remains of bituminous waterproofing, fats, oils - foam and its analogues in contact with these substances are destroyed.
2. Produce basement waterproofing of one of these methods: surface waterproofing using polymer-based mastics;impregnating waterproofing basement waterproofing or roll.
3. plates insulation material is placed on a special glue - it is sold in the form of a dry mix.Plates usually have slots that facilitate their dock and prevents the appearance of cracks, gaps or thermal bridges.
4. surface foundation protects wire mesh from damage by rodents, putting it on the same glue.After the glue has dried, the backfilling of the underground part of the foundation of sand and ground segment additionally secured by means of special anchors with a wide hat.

foundation Thermal insulation with mineral insulation (mineral wool)

This method is rarely used, since in addition to good thermal insulation has a number of drawbacks: for its implementation required a skeleton construction, good protection of insulation from getting wet, as well as the construction of a protective wall ofbrick or other decorative materials.It is used typically to perform the ground part of the basement and ground floor as an extension of the thermal insulation of the walls of the house.

performance technology:

1. Its surface is cleaned and dried, eliminate defects.
2. Carry on it a framework for thermal insulation mats of metal profile.
3. Stack insulating mats on the frame and fix them.The surface of the insulation is closed from the outer moisture vapor-permeable film vetrogidrozaschitnoy.
4. erect a protective wall made of brick or ventilated frame.

Thermal insulation with polyurethane foam foundation

One of the most effective ways of warming of the foundation both outside and inside.For its implementation requires special equipment - installation for spraying through which the insulation components are fed to the surface of the foundation under high pressure.The result is a seamless layer of foam having high thermal and waterproofing properties.To perform this waterproofing is better to turn to specialists, because the quality of the coating depends on the correct mode is selected and the installation itself.

polyurethane insulation on the outside of the foundation can reduce the heat loss of the building by 20-25%, thereby increasing its service life.Thermal insulation of the foundation can be carried out on the construction site, and the building operated.