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.
Typical variants are:-
A) Polyspray System (1) Class 1 fire rated 32 kg/m3 density rigid P.I.R. spray foam, applied to the underside of roofs for insulation, will also bond slates and tiles permanently in position.
B) Polyspray System (2) uses the same foam system as above, but overcoated with Sprayed intumescent coating to upgrade the fire rating to Class '0'. Applied upside down to concrete in underground car-parks.
C) Polyspray System (3) as system 1 but overcoated with spray applied vapour barrier coating in high humidity applications to prevent vapour drive and interstitial condensation. Applied in swimming pool halls, laundries, textile factories to insulate and prevent condensation.
D) Polyspray System (4) High density 48 kg/m3 rigid P.U. system applied to the outside of flat or pitched roofs and overcoated with elastomeric weathercoating to provide an insulated weatherproofing system and achieve FAA & SAA fire rating. Applied to flat B.U.R. roofs, pitched slated roofs, corrugated fibre cement & metal sheeted roofs, to weatherproof and upgrade insulation.
For data on required typical thicknesses of our systems click here.
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