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How to insulate a ceiling in a private house?


29-02-2024

Most residents of private houses certainly face the problem of cold roofs. Most often, attic spaces are not heated, and the level of thermal insulation usually does not provide sufficient heat retention. Therefore, in winter, it rises up in the rooms and quickly goes out through the roof. Thus, in fact, you “warm” the air outside.

To avoid such a problem, you need to think about insulating the ceiling. And if earlier this problem was solved mainly with the help of expanded clay or sawdust, today the range of thermal insulation materials has increased significantly.

How to insulate a ceiling in a private house

You should choose insulation taking into account some important factors. When carrying out work indoors, the emphasis on environmental friendliness becomes extremely important. In this case, the material will not release harmful toxins when heated with warm air. Fire resistance is the second factor.

The lightness of the insulation and its thickness are also taken into account. It is desirable that it be as thin as possible and not weigh down the roof structure. Moisture resistance is the last important factor. The insulation should not accumulate moisture.

Taking these points into account, we can distinguish the following types of materials that protect the house from the cold:

  • Mineral wool. This material has a wavy texture that provides good vapor permeability. Its subtypes include slag, stone and glass wool. For a private house, a layer thickness of at least 15 cm will be required.
  • Ecowool is an innovative material made from cellulose based on waste from the paper industry. Distinctive properties are the porous surface structure, which provides the necessary vapor permeability. Ecowool has proven itself to be a good sound insulator. The important thing is that it is not susceptible to microorganisms and parasites.
  • Foam plastic is affordable and light, provides good heat-saving properties.

Expanded clay should not be ignored either. This material has long been used in construction, providing durability and sound insulation. Expanded clay refers to bulk insulation, implying the need to create a layer from 20 to 40 cm. Therefore, it is used exclusively for attic floors. It also requires an additional substrate.

How to insulate a ceiling in a private house

In total, there are two methods for carrying out such work - internal and external. In the first case, insulation needs to be done at a height of up to 45 cm from the ceiling, in the second, the process is carried out from the attic or attic side. Experts also distinguish between wet and dry insulation methods. The wet version involves installing the material to the surface using glue, followed by plastering. This method is considered simple and fast. Dry is considered more effective, but it is more complicated and requires the help of professionals.

If you need to install the insulation yourself, you should take into account the following tips:

  • with a very cold roof, the layer thickness should be at least 30 cm;
  • installation must be carried out taking into account the provided technology;
  • foam cannot be laid on ecowool, since then the vapor permeability effect will be impaired;
  • Joints between sheets of material should not be allowed to appear - they can be sealed using sealant or special tape;
  • the vapor barrier film is laid only on one side;
  • to create good sound insulation, you will need mineral wool with density characteristics in the range of 40 kg/m3 and higher.

Insulating the ceiling in a private home will allow you not only to achieve a comfortable indoor microclimate, but also to ensure financial savings. Therefore, investments in such an event will definitely pay off in the future.

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