Various insulating materials are used to insulate structures. Some of them have been used recently. During installation, it is important to correctly lay the foil insulation in order to achieve maximum heat transfer.
Varieties of foil insulation
The material has several varieties. They differ in the ingredients used, but they all have a layer of foil. The characteristics of the species are slightly different, so each of them is used in certain conditions.
Foamed polyethylene foam
Available in rolls, one side covered with aluminum foil. Insulation thickness 2-10 mm. The bottom layer is made on an adhesive composition. The base is a layer of foam with different density, thickness and structure.
The technical characteristics of the material allow it to be used in a wide variety of areas.
- You can work with insulation at temperatures from -40 to +120 degrees.
- Sound absorption - up to 32 dB. This makes it possible to use it as sound insulation.
- It is produced in white rolls in standard sizes 1 m wide and 50 m long.
- Compression limit 0.035 MPa.
- Thermal conductivity - 0.037-0.038 W / m * K.
The material is available in various versions, which are indicated by letter marking. Foil-clad polyethylene foam allows you to protect your home from cold, noise and dampness.
Folgoizol
The insulator is made on the basis of bitumen with polymer materials or rubber. From above, foil-insol is covered with foil, which enhances wear resistance and durability. It is used for roofing, waterproofing. It is produced in two versions: weldable and self-adhesive foil insulation. Has the following technical characteristics:
- roll width - 1 m, length - 10 m;
- absolute waterproofness;
- bottom layer - polymer film;
- base - fiberglass, fiberglass, bitumen, polyester;
- top cover - aluminum foil;
- resistance to chemical products;
- long service life - 80 years.
Due to its versatility and ease of processing, foil-insol is used in construction, medicine, food industry, mechanical engineering.
Mineral wool rolls
Mineral wool is used to insulate the surface, it is produced in rolls, plates, cylinders, covered with foil on one side. The thickness can vary from 50 to 100 mm. The main advantage of cotton wool is that it almost does not conduct heat. Low thermal conductivity - 0.03-0.04 W / m * K allows the material to be used in all types of insulation works.
Basalt lamellar insulation
The basis of this unique insulation is waste rocks, therefore it is also called stone wool. Basalt material has several main features.
- The structure of the insulator keeps the room warm.
- Unlike other types of insulation, it does not absorb water at all. Recommended for warming rooms with high humidity.
- Does not impede the passage of steam.
- Has good fire resistance. The material is classified as non-flammable.The melting point of basalt is +1114 degrees, so it can be used as an insulator for devices operating at elevated temperatures.
- Provides a high level of sound insulation.
- The heat insulator has high strength and density, is not subject to deformation, and serves for a long time.
- Resistant to mold, rust, chemicals.
Lamellar basalt insulation has a self-adhesive foil layer.
Expanded polystyrene plates
Polystyrene foam heat insulator is used in industrial construction. The features of the material are as follows:
- low cost - an equivalent volume of mineral wool costs twice as much, it will need more to insulate a house than expanded polystyrene;
- insulation plates are easy to fit;
- universal application - for wooden, concrete and brick surfaces, foundations, floors, loggias and balconies, noise insulation, insulation.
To properly lay insulation with foil on the floor or on walls, you need to read the recommendations for installing the material.
Technical advantages
A layer of foil reflects heat into the room so that it does not go outside.
Material advantages:
- thermal insulation of foil insulation reaches 95%;
- the material does not allow water to pass through;
- protection of the premises from wind, drafts, temperature drops;
- the presence of foil increases noise insulation;
- the material is environmentally friendly, safe for humans and the environment, does not emit harmful substances;
- protects walls and floors from decay, moisture, damage by rodents;
- performs a mirror image of heat into the room, since insulation with foil must be laid with the foil side up.
The advantages of the material make it possible to use it in almost any type of building, for insulation of private houses, hydro and noise insulation.
Rules for laying foil insulation
There are rules for installing thermal insulation with foil.
- The parameters of foamed polyethylene allow you to leave the amount of living space unchanged. You can lay the material using a simple construction stapler.
- Lay the foil insulation on the floor so that the aluminum side of the material is located towards the inside of the room.
- Basalt wool is placed with a layer of foil upwards. It is necessary to work with this material in special protective clothing and a respirator, as it emits substances harmful to humans. For convenience, the basalt is sawn into lamellas (strips) of the required width.
- It is important to fix the EPS boards to the floor in the right direction. They are placed under the linoleum tightly to each other. The foil ensures the tightness of the connection.
Each type of material is fixed with the side with foil inside the room. If you lay the insulation incorrectly, most of its characteristics will become useless.
The use of foil insulation
The use of materials depends on their technical features.
- Foamed polyethylene is versatile. It can be used for wall and floor insulation, sound insulation.
- Folgoizol is used in construction, pipe and roof insulation.
- Foil mineral wool is used for insulation and heat preservation of walls and floors. Unlike ordinary mineral wool, foil does not allow moisture to penetrate into the fibers.
- Basalt insulation is considered the most highly effective, since it is not affected by moisture, fire, temperature extremes. It is used to isolate various objects.
- The floor is insulated with expanded polystyrene plates.
All materials coated with aluminum foil have high technical characteristics.
The nuances of fastening and installation
Installation of insulation is easy, it is easy to cut and fit. Work outside and inside is almost the same.
The main nuances:
- the surface on which the insulation is placed must be clean;
- the material is straightened so that it is even, without folds;
- the foil prevents heat from escaping, so it is laid with the outside side up;
- the insulator is glued end-to-end, the joints are glued with tape;
- if the insulation does not have a self-adhesive layer, use a special glue.
It is important that the adhesive used for fastening does not emit harmful substances and holds the material firmly.
Walls
Installation of insulation to the wall must be thoroughly thought out. An air gap is left between the material and the subsequent finish to avoid condensation.
- The membrane is fixed, an insulator is rolled over it.
- The material is fixed with slats. Their thickness should be greater than the main insulation.
- Along the edges of the rails, the insulator is connected with staples.
- The paneling is done on top of the strips, their thickness provides the required air gap.
When insulating with mineral wool, a film is laid to prevent the ingress of steam and moisture inside.
Floor
Underfloor heating, regardless of whether the base is wooden or concrete, is done in the same way.
- Clean the floor of debris before applying insulation.
- Cover the base with a primer.
- After drying, roll out the insulation. The strips are laid with an overlap, fastened with construction tape. Under the linoleum, you can expand the underlay, which will make the floor much warmer.
- A topcoat is applied on top of the insulating material.
If it is planned to lay a warm floor, the insulation must be put with the reflective side up, then the reinforcing mesh, heating elements and the finishing cladding.
The choice of insulation materials is wide enough. Each of them has distinctive characteristics. The application depends on which room needs to be insulated.
The fact that on the walls it is necessary to provide an air gap with slats is true. Otherwise, there will be nowhere to reflect. No material should touch the foil! But to use foil for warm (and any other) floor is stupid. There is nowhere to reflect, everything will be filled with a screed. Weak consolation - the temperature between the cable loops will even out a little, because aluminum is a good conductor of heat.
Quite so. Therefore, pouring the screed, I put an optical separator on the foil - 2-3 layers of polyethylene film. Not God knows what, in terms of IR transparency, but better than nothing. Plus, it protects the foil from corrosion.
And I need to put an insulator between the ceiling and the metal roof on the veranda of the house. The metal is laid directly on the ceiling planks. In summer - heat, in winter heat is retained by heating, but on the other hand, condensation leaks with the danger of destruction of the supporting beams. Yes, and the icicles from the outside to the very ground muffled: they can squeeze out the glass of the windows. Can anyone tell me which insulator to use and which side to install it on? Thank you.
There should be a membrane, then a gap of 5 cm is usually enough for this bar and then the metal helps to make good insulation from the inside to the eranda your ceiling will rot Good luck Vladimir
Vladimer, you can remove the iron from the roof, lay a vapor barrier along the crate with parchment, put the iron back with ruberoid. there will be no condensation. Warm what you want.
It makes no sense to put insulation with foil without protection under the underfloor heating screed. Cement will eat foil very quickly.