Insulation for the roof. Main types and characteristics

Almost a third of all heat loss at home falls on the roof. In winter it is necessary to warm up the shelter, and in summer to protect from the heat. Therefore, the insulation for the roof is necessary. A very wide range of this material is on the construction market. This is due to the fact that a certain heater is needed for different purposes. For example, the one that is suitable for the attic, can not cope with the loads that are placed on it in the bath. This article will describe the characteristics that heat insulators should match for the roof, and consider their main types.

Insulation for the roof. Main characteristics

An important point is the choice of insulation. To ensure that money is not wasted, you must adhere to the following criteria:

• The lighter, the better. By purchasing light material (within reason), you will save on delivery, pressure on the construction of housing will be less, and noise and heat insulation qualities are higher. Standard specific gravity: 14-20 kg / m3;
• Conductivity of heat. Choosing a heater for a roof with low thermal conductivity, you will significantly reduce the cost of heating the room in the cold season. The level of this criterion depends directly on the specific gravity of the material and on the air contained in it;
• The service life should be about 25 years, so that the operation is as efficient as possible;
• High vapor permeability. This will help maintain the optimum humidity regime in the room and in the roof structure;
• Non-flammability is an important indicator of insulation, as in the structure of the roof there are air vacuums, where fire can spread in the event of a fire;
• Environmental friendliness of the material is achieved through the use of natural raw materials, European certification that has been simplified.

Roof insulation. Basic views

As already mentioned above, the assortment of insulation for the roof is high. They have in their composition certain layers, due to what they called the "roofing pies". Most often for these purposes, mineral wool is used, which has its own The basis of fiberglass and basalt, foamed glass, expanded polystyrene, cork agglomerate, cellulose. The first material is more common for the roofing insulation . In addition to excellent heat insulation, it is a good protector against noise and does not support combustion. The total thickness of this insulation should be about 20 cm. In addition to the choice of material, it is very important to fix it in order to prevent it from sliding down after a certain period of time. The second most popular use is a fiberglass insulation. It consists of a large number of thin glass fibers (approximately, approximately, with human hair), with air between them. Due to this, its thermal conductivity is somewhat lower than that of basalt. You can also use a liquid insulation for the roof - penoizol (foam). Its distinctive characteristics are the following: high degree of vapor permeability, non-inflammability, low density, reasonable price, resistance to microorganisms, good index of thermal insulation.