Features of thermal insulation of the ceiling of the house from the attic

In private homes, heat loss mostly occurs through poorly insulated roofs. To do this, in the construction of houses with cold attics it is necessary to take care of good thermal insulation of the attic floor from the inside or outside.

Consider the features of the insulation of the ceiling of the house from the attic.

Special features

Today, innovative technologies for the production of thermal insulation material will help to maximize the insulation of the ceiling, including from the attic. Prior to the start of installation work with insulation materials, it is necessary to know about the distinctive features between the main insulation products and insulation methods.

Of the range of heaters presented for sale by trademarks, the most well-known are the following:

  • vapor-permeable fiber-based materials;
  • polystyrene foam;
  • Styrofoam;
  • hydrophobic insulation of polyurethane foam.

The choice of material for thermal insulation works is an individual matter of each, depending on the technology of insulation and sufficient availability of funds. In the case when the house has a wood or coal stove, and the exhaust pipe passes through the attic, non-combustible materials need to be spread around the pipe.

If there is gas heating in the house, and combustible materials are present near the heating boiler, it will be difficult to obtain a permit for operation. In a private house ceiling ceiling is made of concrete or wood.

In the first embodiment, foam plastic, mineral wool tiles are used. In the thermal insulation of wooden floors, they use quite reasonable building materials with a low thermal conductivity coefficient. Wood ceiling is much easier to work with. Installation methods for concrete or wood floors are different..

Advantages and disadvantages

Each of the methods of insulation of the ceiling from the attic (internal or external) has its advantages and negative sides.

  • For insulation of the ceiling from the inside, it is necessary to install a suspended structure made of metal profile or wooden bars. The disadvantage is the actual reduction in room space.
  • External warming is an uncomplicated process that does not require an expensive overhead frame. Usually use different bulk building materials with low thermal conductivity. This technique is often used when insulating non-residential attics.

Mineral wool is recognized as a popular material for thermal insulation of an attic floor. However, in the binder material there are inclusions of phenol-formaldehyde resins. Over time, they begin to be released into the air, which serves as a threat to the health of the household. That is why to consider heat insulation as environmentally safe in this case would be wrong.

Material selection

The choice of thermal insulation material for the ceiling is individual. The main selection criteria should be considered.

These include:

  • low thermal conductivity;
  • moisture resistance of the material;
  • ability to resist deformation from mechanical impact;
  • resistance to high and low temperatures;
  • compact specific weight of insulation;
  • the ability to freely pass air and water vapor;
  • environmental friendliness, expressed in hypoallergenic products for residents of private houses;
  • material hygiene, protection from mold and mildew.

There is no organic material in mineral or polymer based materials. There is no risk of damage to the product by small rodents and insects.

The main properties of the correct insulation material attic floors are presented in the following varieties:

  • minwat;
  • mineral wool plates;
  • expanded clay granules;
  • slag;
  • Styrofoam;
  • polystyrene foam;
  • isolon with polyethylene foam;
  • perlite;
  • sawdust and clay;
  • combined blends.

Subtleties of installation

The ceiling is insulated from the room or attic. It often happens that after installing a draft ceiling, the bearing wooden beams are from the attic. The installation of the insulation layer is laid in the space between them.

Depending on the materials used, the method of installation of insulation has distinctive features. For example, mineral heat-insulating materials when wetted can partially lose their qualities.

    So that water condensate does not appear in the thickness of the mineral wool, the entire insulating layer of the attic floor must be breathable.

    Considering that polymer-based insulants are not endowed with air-penetrating qualities, they do not allow moisture, it is not necessary to add a hydroprotective membrane. Installation of clay insulation with wood chips does not require the inclusion of auxiliary materials. The installation process is simple and easy.

    The procedure for styling styrofoam involves several successive steps:

    • Prepare the surface: hide defects and irregularities. For this purpose, a screed solution is made of sand and cement.
    • Insulation plates are mounted end-to-end or between the bars and wooden beams. In this case, the wooden frame serves for the strength of the entire system.

    Useful tips and tricks

    Consider the recommendations of professionals on the insulation of the ceiling from the attic:

    • If a private house is located in an area with a fairly warm climate, you can limit yourself to a single layer of insulating material (for example, a modern isolonon).
    • Expanded clay granules belong to the budget option of heaters that provide environmentally friendly thermal insulation of the ceiling.
    • Thermal insulation of the attic floor should be carried out comprehensively (with insulation of door and window openings).
    • In order to qualitatively and reliably insulate voids in the floor structure, claydite must be purchased with granules of different sizes. After the whole procedure, the concrete mix is ​​laid for floor screed.
    • When insulating with foam plastic, it is necessary to take into account that when it is heated, harmful vapors are released. The question will solve high-quality ventilation.
    • On packages with mineral wool, you can view data on the density of building material.

    How to make insulation of the ceiling with expanded clay is described in detail in the video.

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    Information provided for reference purposes. For construction issues, always consult a specialist.

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