Build Daily

August 12, 2017 18:06

Thermal insulation of concrete floor in a private house

Thermal insulation of concrete floor in a private house saves heat, improve the microclimate in the house, as well as to save on heating.It is known that a concrete slab with a large temperature difference from the inside and outside at the "cold" surface condensation, thereby increasing the humidity in the basement and on the first floor.Warming can solve this problem.

Thermal insulation of concrete floor in a private house

Thermal insulation of concrete floor in a private house

for insulation of concrete floor, you can use almost any modern insulating materials, but the main ways of warming currently three:

  • using fiber insulation - mineral, basalt or glass fiber wool;
  • using molded foam materials - foam boards, polystyrene;
  • via deposition of polymer insulation - polyurethane foam, Penoizol.

All these heaters are quite effective, and depending on the type of insulation of their stacking technology is different.

When selecting insulation materials should take into account features.The fibrous insulation has good heat and sound, does not support

combustion, but is afraid of water.When wet, it sharply decreases in volume and loses its insulating properties.Therefore, it is not recommended for use in wet areas, where there may be a leak, and in the other rooms must be waterproofed on both sides.

Foam is flammable, mechanically strong, although it has a low price.If you want to insulate the floor at a minimal cost, you can choose as insulation foam boards, but it is required to close the top material redistribute point loads - plywood, chipboard or plasterboard.An analogue of foam - ekstrudirovannyypenopolistirol - does not support combustion, as it does not air bubbles are filled, and carbon dioxide.It has a high strength, so it can be used for thermal insulation of concrete floor directly beneath the concrete floor.

modern and highly effective way sprayed insulation is different in that it requires no alignment and surface preparation, forms a seamless coverage, its insulating properties are very high.In this case the application of sprayed insulation require call professionals with the installation for spraying.

Thermal insulation of concrete floor

fiber materials for insulation of concrete floor mineral wool should be aware of its features and observe the sequence of layers.The thickness of the insulation is determined by the characteristics of the material.This information is usually provided by the manufacturer.Usually it is enough 5-10 cm layer of mineral insulation.

  1. Produce preparation of the concrete base: embedded cracks, remove stains grease and other aggressive liquids.The floor surface veiled paroizoliruyuschey film, putting her butt.Joints glued metallic tape.
  2. On the floor are fixed lag, lag height should be equal to the thickness of the insulation layer.Distance between logs also selected based on the size of heater - plate or roll insulation between joists should go to bed, leaving no gaps.

    The process of laying lags and mineral wool on the floor

    process of laying lags and mineral wool on the floor

  3. On the insulation is laid waterproofing membrane vapor-permeable film with the rough side to the heater, and smooth - to the floor surface.The membrane removes vapor from the layer of insulation and dampen it allows at the same time protects it from water leaks.
  4. above stack sexual decking or plywood sheets with a thickness of 10 mm, fixing them with screws to the joists.On top of the plywood can be laid at any topcoat - laminate flooring, linoleum, cork.

    The next step is laying flooring or decking plywood

    next step Flooring decking or plywood

Thermal insulation of concrete floor polystyrene

Thermal insulation foam or polystyrene is used normally under a concrete screed.These materials are waterproof, so they can be used in bathroom, kitchen and other wet areas.

  1. Preparation of concrete floors is to clean it from debris and dust, in the closing of cracks and alignment protrusions and dents.If the floor has many small irregularities, it can be filled with a thin layer of sand.
  2. insulation boards are laid on the prepared substrate butt.On the insulating plates are often special grooves to facilitate stacking and eliminates gaps.Plates are placed throughout the area to insulate the floor.

    The process of laying insulation boards on concrete base

    process of laying insulation boards on concrete base

  3. On perimeter of the room is placed on the lower part of the wall damper foam tape.It is necessary to screed with temperature change can expand freely without any deformation.Damper tape or paste on a special layer, or attach to the dowel-nails.
  4. insulation is laid on top of a thick polyethylene film, and the strip is placed on the lap of 15 cm and glued shut.The film needs to fill with the concrete screed from seeping between the insulation and no formation of cracks and voids.
  5. Lay rebar and pour concrete for screeds, level it and allowed to solidify.On top of the concrete screed can then be laid any topcoat, including granite and tile.

    Laying on the floor with plastic film and grouting

    laying on the floor and plastic film zilivke concrete

Technology polystyrene insulation of the floor is used when the warm water of the sexes.In this case the heating circuit are placed on reinforcing mesh, after which concrete is poured.

Thermal insulation of concrete floor sputtered materials

Highly efficient method that requires the participation of professionals.Insulation is applied to the floor in a foam with a closed cellular structure, after application and expands in size, forming a seamless layer of insulation.Application of foam produced using a special apparatus in which mixed polymer liquid and carbon dioxide under pressure.

  1. Preparation of the concrete base is to remove the debris and dust that may impede the adhesion of the foam.It is also necessary to clean the floor of the fat stains, bitumen and solvents - they destroy the foam structure.Leveling the floor is not necessary.
  2. For subsequent laying of floor you need to install wooden logs from the bar or board 40 mm and secure them to the floor with corners, dowel-nails and screws.
  3. before spraying insulation is necessary to moisten the concrete to improve adhesion.Application of polyurethane foam produced using plant spraying foam on the surface of the floor between the joists.Foam expands after application, it must be considered when spraying.

    Thermal insulation of concrete floor sputtered materials

    Thermal insulation of concrete floor sputtered materials

  4. foam Curing continues for days, after which can be laid on the joists floor boards, plywood or drywall and lay finish flooring.Since the polyurethane foam is destroyed when exposed to sunlight, it can not be left without coverage for more than a few days.

There are other ways of warming of the floor, the less efficient.For example, the execution of the dry screed of expanded clay also allows you to create insulated layer.The very concrete screed by adding a solution of polymer or cellulose fillers acquires insulating properties.Choosing a method of warming the concrete floor in a private house, it is necessary to take into account all factors, including the method of insulation of the foundation.