Sprayed rigid P.U. (Polyurethane) & P.I.R. (Polyisocynurate) foams have long been acknowledged as among the best insulants available.
In addition, the foams have excellent adhesive properties, which coupled with the fact that they can be spray applied, make them an ideal product for numerous applications.
MPI Polyspray is available in a range of physical properties; typical densities are from 30-60 kg/m3 but others are available.
All systems are CFC free and have K factors of 0.024 w/m.
Internal grades of Polyspray have Class 1 fire rating to BS476 pt. 7 and can be overcoated with protective coatings to give Class 0 to BS476 pt. 6. Alternative coatings are available for decorative purposes, or to act as vapour retarders/barriers.
External roofing grades are available at high densities to withstand foot traffic and when coated with a suitable protective coating such as GE (General Electric) silicone rubber and have EXT, FAA & SAA fire ratings.
Polyspray can be applied to any thickness to achieve desired 'U' values and adheres tenaciously to virtually any substrate. Once applied, the Polyspray is basically inert and will, when protected correctly, last indefinitely.