Many will wonder what exactly polyurethane foam is used for when building. The answer is very simple: it is one of the most powerful thermal insulators on the market. It is obtained from the mixture of two chemical components: Isocyanate and Polyol. Due to its durability, high resistance and easy application, it has become one of the essential materials to keep buildings cold or warm according to the season of the year.
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Introduction to the uses of polyurethane foam
There are two ways to apply the rigid polyurethane foam under construction (provided that the current regulations regarding the thickness required for each construction situation are respected). These are: - projecting its two components simultaneously on the surface in question ( projected polyurethane )
- mixing both chemical elements before application General attributes One of the most important resulting benefits is maximum insulation with the minimum thickness . Even in the case of "in situ" projection (normally used in interior and exterior facades), other performances can be added: high adhesion, effective adaptability, impermeability, continuous application without joints or thermal bridges, double quality certification (product and installation).
Thermal and waterproof properties
The insulating capacity of polyurethane foam comes from the low thermal conductivity of the gas emitted by its closed cells. This feature places it above all other products of this type. It should be noted its resistance over time and its long duration without deterioration (which may exceed fifty years). Its reaction to water There are many properties of this material that make it really waterproof: tightness, adhesion, physical and chemical stability, permeability and resistance to cracking. When placing the polyurethane foam as an intermediate continuous coating, no plaster is required (mortar coating), which is a great economic benefit.
Attitudes towards fire and humidity
Once the work is finished, the polyurethane foam will be placed under ceilings, walls, walls and floors. Bearing in mind that polyurethane is combustible material, such surfaces must be composed of fire resistant components so that there is no danger. Its reaction to humidity This product is waterproof, which allows the transpiration of the enclosure. The latter prevents all kinds of drawbacks that drag moisture, such as fungi. Finally, it is essential to highlight the acoustic properties of the foam (acoustic foam). Being a light material and high density, if combined with other materials, it is very effective to eliminate resonances, noise, and everything related to the transmission of sounds. Undoubtedly, polyurethane foam is preferred by many architects when choosing a quality insulation.