Polyurethane spray foam – SPF (spray polyurethane foam) is a plastic foam in a liquid state for thermal insulation which, when applying, expands several times in relation to its initial volume according to http://foamworks.ca/. The properties of PU foam (PUR foam) can be customized to meet different needs in different applications.
Isolation of attic with PU foam in spray
For example, the same basic raw material can become an end product that is soft or semi-hard, but it can also make high-density foam suitable for thermal insulation of roofing systems resistant to traffic (on a flat roof) or water.
Special equipment is used for the installation of PU foam and training of workers is required to put this type of thermal insulation on site. This is especially important because it does not buy finished products such as mineral wool plates or EPS (EPS-expanded polystyrene known as “styrofoam”, ie Styropor brand), but thermal insulation is created on-site.
What do you need to get started?
Compressor, distributor of PU spray foam, protective suit, and, of course, basic training. PU foam is a very common type of thermal insulation in the United States, but it is also applied in other countries and continents. The PU-foam Alliance (SPFA) gathers producers, distributors and contractors of this isolation and you can find out all the additional information on their site.
Numerous advantages are easy to present to the market, and the possibilities of applications will make it possible to fulfill the different requirements of clients by product of one type:
thermal insulation of walls, foundations and roof
installation of a passageway
decoration of the attic space
stiffening of the structure
regulation of water and moisture
energy optimization of the building
application in public, residential and commercial buildings…
In particular, the role of thermal insulation of PU foam for humidity control in the building is highlighted, sealing of the space and of course, it represents an exceptional thermal insulation with a high R-factor (R-unit for thermal resistance used in the USA instead of the European value for thermal conductivity).
When applied in the roof system, the PU foam eliminates thermal bridges (sometimes known as “cold bridges”), fills holes in the roof structure, but also around the chimney, ventilation or roof windows, thereby extending the lifespan of the roof. PU foam will, with the protection of additional coatings and regular repairs to damaged areas, make a roof of durability 10-15 years.
Due to the mentioned properties, PU foam is used for different purposes. Let’s list some of them, but the list does not end here:
roof systems
air barriers
thermal insulation of walls, ceilings, attic and basements in buildings of all types
industrial insulation for pipes, tanks, refrigerators, freezers, refrigeration halls and all air-conditioned buildings
other applications such as the thermal insulation of ships and boats, or strengthening the wing of some types of aircraft.
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