Open-cell foam

• The low thermal conductivity coefficient effectively insulates the interior of the house against cooling or overheating. Obtained with the help of polyurethane and air filling the blisters, the lambda is between 0.036 and 0.038 W/mK (depending on the system selected).
• The foam adheres perfectly when sprayed onto the surface. No additional processing is required; this eliminates financial outlays and reduces time.
• A single layer of the open-cell foam grows to a thickness of approximately 8 cm. Such an intensive expansion of the material enables the complete filling of gaps and slots as well as unevenness. It also fills any available space between the elements. This creates a layer filled entirely with foam, minimising the risk of heat loss through gaps, slots and insufficiently filled areas.
• The effectiveness of the spray material is also increased as the foam forms a uniform layer. The absence of welds, slots and other joints, as well as assembly elements, ensures the maximum efficiency of the polyurethane monobloc.
• The open-cell foam is also open in terms of diffusion. Diffusion is a physical phenomenon which involves the movement of one substance into another in the direction resulting from a pressure difference. This allows moisture to penetrate freely through the insulation and is then transported outdoors.
• The majority of Purios polyurethane PUR foam types have been included in Category E in reaction to fire. Some of the spray insulation systems we have tested have received a rating in the Building Product Fire Reaction Test. The test confirms the high level of fire resistance and also indicates the absence of smoke and flaming droplets throughout the test.
• The National Institute of Public Health has certified the hygienic suitability of the open-cell foam for use in hospitals, as well as buildings for pharmaceutical, food processing, refrigeration and brewery applications, plus other food- and medicine-related applications.
• The open-cell PUR foam creates an unfavourable environment for the growth of micro-organisms. Therefore, it effectively contributes to inhibiting mould growth.
• One great benefit of the system for the investor is the very short application time of the thermal insulation. A team of professionals can insulate up to 200 m2 of space in one day, which on average speeds up the progress of the work by 2 weeks.
• The PUR foam is a very good material for soundproofing. An additional benefit of insulating the house with it is therefore noise reduction.
• The open-cell polyurethane foam is a thermal insulating material; its manufacturer declares the stability of its most important parameters for at least 25 years. The certificate confirming the stability of parameters of the Purios foam assures you that the dimensions, thermal insulation performance and fire resistance class will be maintained for at least a quarter of a century.

A 25-cm thick layer of the open-cell foam suffices to meet both the high standards of the latest construction regulations (directives of the energy performance of buildings and the WT2021 regulation specifying technical conditions for buildings) and expectations of users, in other words homeowners.