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  • What is polyurethane?

    Polyurethane is a polymer that is formed by the reaction of polyfunctional isocyanates with polyols. In addition, additives such as flame retardants, catalysts, silicone stabilizers and foaming agents are also used in the manufacture of the polyurethane. Polyurethane has been known since 1937 when two German scientists first published and patented the method of its manufacture. Currently polyurethanes (PU, PUR) are some of the most popular and widely used polymers in the world.

  • What is a spray foam?

    Polyurethane foam spray (or: spray, PUR foam) is a proven insulating material mechanically deposited on an insulated surface.

  • What are the dimensions and thicknesses of the insulation boards available in Crossin®?

    Standard dimensions of Crossin® Insulations PUR boards are 1000 × 600 mm with thicknesses from 2 to 20 cm.

    In the Crossin® Dual system, the standard dimensions of the boards are 922 × 600 mm with thicknesses of 2 to 20 cm. The Crossin Dual Crossin® PUR coverage is 900 × 578 mm.

    It is also possible to order insulation boards made of rigid PUR foam of larger or smaller dimensions.

  • What are the types of spray foams?

    Spray foam can have a different structure. We distinguish foams of closed-cell structure (rigid foam, hard foam) and open-cell structure (semi-rigid foam, soft foam). The structure is strongly associated with the density of the foam. The more closed cells, the higher the density of the material. The structure has a significant effect on the use of foam.
    (acc. to PN-EN 14315-1)

    CCC1 Class: < 20%
    CCC2 Class: Od 10% do 80 %
    CCC3 Class: > 80% do 89 %
    Class CCC4: ≥ 90%

  • What are the physical and technical characteristics of polyurethane boards?

    The physical and technical properties of Crossin Insulation PUR foams are as follows:

    • Excellent insulation – at a density of up to 35 kg/m3 only 4% of volume is solid, 96% gas influencing the isolation parameters. Crossin® Insulations olyurethane boards have a thermal conductivity of 0,022 W/m*K;
    • Low density – low material weight reduces transportation costs and facilitates assembly;
    • High mechanical strength – high values of mechanical parameters of rigid PUR foam such as: compressive strength or resistance to shearing.
    • Compatibility with most materials found in construction;
    • Low water absorption;
    • Resistance to fungi, molds and rodents;
    • Chemical resistance to diluted alkaline and acidic liquids and most organic solvents.