Polyurethane foam is a material that is used for thermal and acoustic insulation (among many other functions), both in building and industry.
Before any project related to the isolation that we may want to enjoy in our home, the professionals of the sector analyze the factors to take into account for the work and it is quite likely that we advise the use of these " polyurethane foams ".
In this article we explain why we choose polyurethane foam as the best material for insulation and so that, in the future, you know the benefits you can get if we advise you to use it in your home.
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Polyurethane foam: What it is and why it is so appropriate in insulation
If we get a little technical, we can identify the polyurethane foam as the chemical reaction of two compounds, the polyol and the isocyanate . But although knowing the origin of the formation of a material is always interesting, the truth is that it does not really explain what it is.
To be more practical, we can identify this product as a foam, which is applied by spray on those surfaces where we need to act their properties. This has also caused that in many cases it is known as "projected polyurethane".
However, the way to place it depends on the type of polyurethane foam chosen, as well as the surface where it is applied and the equipment available to us.
The reason that it serves so effectively for problems related to insulation, both acoustic and thermal , is that its properties are an excellent insulator both in terms of the temperature of a home and the outside, as well as the existing noise.
In addition, its composition in the form of foam, makes it useful even where other insulations of granulated composition do not arrive and with an even simpler application.
By listing the main advantages of polyurethane foam we can find the following:
- It allows a very versatile use , in large or small quantities, in wide or small spaces, in cavities or fissures.
- It has a great resistance to air , which makes it an excellent source of insulation.
- It also acts as a vapor barrier , achieving as a secondary effect to reduce humidity in the home.
- Wherever it is applied, it also has the property of improving the stability of the infrastructure.
Types of polyurethane foams
Since polyurethane foam can be used in multiple situations, its variety has also been adapted to each specific type of need.
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Below we identify the different types of polyurethane foams existing in the insulation sector and their different characteristics:
Polyurethane foams inside and outside
Depending on whether we work in an insulation work on the interior of the house or on the exterior façade, the polyurethane foam may have to withstand different temperatures . In most cases there is no difference in the type of foam used, but for extreme cases there are alternatives.
In this way, it is possible to use polyurethane foams created to withstand temperatures ranging from -10º to 35º.
Polyurethane foams for joints and cracks
In a comprehensive insulation or waterproofing service , we can identify joints and cracks in the house that will affect the environmental comfort of the stay. To cover them, polyurethane foam can be a highly recommended option.
For example, with it we can apply it flexibly, in small or large quantities and without risk of cracking in the future, as it does with other materials.
Polyurethane foams to resist heat
One of the most striking properties offered by the injection of polyurethane foam in certain types is to be flame retardant, that is to say that it can be a resistant or retardant material of fire action .
This type of special foam is useful in those structural areas that require a specific fire resistance, such as in adjoining walls, electrical installations, cable or vents, in fire walls, emergency doors, etc.
Polyurethane foams for tiles
One of the most frequent jobs in which polyurethane foams are required is that of roof repair and insulation . In fact, in those formed by tiles, a specific typology for this material can be applied. The secret lies in its adherence, which is notably superior so that its usefulness is effective, as well as to avoid damaging the surface on which it is applied.
When to use polyurethane foam
We have already identified some frequent uses of polyurethane foam , but we did not want to miss the opportunity to specify more those situations in which its application is more than recommended. Some of them may be happening in your own home.
Thermal insulation cases
In some homes it is impossible to control the indoor heating or the air conditioning. Consequently, we try to act on the existing installation, causing greater energy and economic expenditure.
The long-term and most efficient solution is that of thermal insulation work . Among the many existing materials for this work, we can take advantage of the properties of polyurethane foam (low conductivity, greater control of thermal bridges) to obtain optimal results.
Acoustic insulation cases
This material also has very efficient properties to isolate external and internal noise , so in those homes that need this service, polyurethane foam becomes a perfect ally.
To control humidity
Its waterproof character allows a greater transpiration, being a barrier for the steam and preventing the appearance of humidity .
In those homes where they have already appeared, there will first have to solve the problem and subsequently apply the insulation with polyurethane foam to prevent future dampness.
In infrastructures or installations with risk of fire
In a home, as in residential buildings and businesses, there may be several existing elements to prevent the spread of fire, the risk of short circuit or allow evacuation of residents or professionals without risk. With polyurethane foam what we achieve is to act on the filling, sealing and joints or coatings, to achieve a completely fireproof installation.
In any case, polyurethane spray has proven to be one of the best materials for the insulation of roofs, facades, chambers and those rooms where we need a material capable of being applied to any surface, even the smallest and in a comfortable way and effective. Whenever, of course, we have the appropriate polyurethane foam and qualified professionals in their correct application.