The insulation of walls with polyurethane is shown as a very effective solution to improve the energy efficiency of buildings. This results in significant savings in energy consumption, which reduces the cost of air conditioning, as well as pollutant emissions. And, above all, achieving greater comfort inside the home.
What kind of walls are there? What kind of walls exist?
Depending on their function, they can be retaining, load-bearing and dividing walls.
The retaining wall is a structure that serves as an enclosure, in charge of containing some material, such as soil or water. It supports horizontal thrusts transmitted by the ground, and vertical thrusts transmitted by the pillars or load-bearing walls. Reinforced concrete is usually used for its construction.
The load-bearing wall, also known as the master wall, supports structural elements in the same way as beams or columns.
The dividing wall is used to divide two spaces, so it is lightweight, not having to bear loads from the ground. In addition, it can provide insulating and waterproofing functions to the construction.
On the other hand, walls can also be classified according to their placement. In this way, we will find cappuccino, rhyme, blight, combined or folded walls. Another common classification is according to the material used for its construction.
Why is wall insulation necessary?
Because through them, heat loss, condensation humidity and the transmission of annoying noises are frequent. The thermoacoustic insulation of the walls using polyurethane makes it possible to avoid these problems, effectively eliminating thermal and acoustic bridges and also damping the vibrations caused by sound waves.
How can walls be insulated?
For wall insulation there are different systems on the market that guarantee thermo-acoustic protection. In double-leaf partition walls, expanded polystyrene is frequently used. This material is also present in the perimeter insulation of walls, due to its high mechanical resistance.
Rigid extruded polystyrene sheets are an alternative for the insulation and waterproofing of buried walls. This option, also widely used in roofing, effectively reduces thermal transmittance. Another type of wall insulation is mineral wool and glass wool panels, with thermal and acoustic insulation functions.
On the other hand, polyurethane is an insulating material with a very low thermal conductivity, which also protects against humidity, preventing the appearance of fungi. And, thanks to its versatility, it adapts to multiple needs and construction elements. It is very resistant, light and easy to apply, which forms a continuous layer without joints that has a sealing effect, thus solving cracks and crevices. In addition, the injected polyurethane into the air chamber contributes to the stability of the structure since, due to its great adhesion, it serves to reinforce the union between the leaves of the wall. In the case of sprayed polyurethane, the minimum thickness of the insulating layer allows for the best performance of the product, making it a system widely used in dividing walls.