A high performance insulation board manufactured from CFC or HCFC free, closed cell Polyiso (PIR) rigid foam, covered on both sides by saturated fibre glass facers, for plaster adhesion.

Suggested for external insulation: walls in ETICSystem applications, correction of thermal bridges and 'cappotto' system.


  • Dimensions: 600 x 1200 mm
  • Standard Thickness: from 20 to 120 mm
  • Thermal Conductivity: λD=0,025 to 0,028 W/mK (depending on panel thickness)
  • Acoustic Isolation of Wall: 52 dB
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Insulation for external walls

Due to its’ excellent thermal insulation performance, STIFERITE Class SK panels are used to efficiently correct thermal bridges of pillars, sidewalks, etc. The safety mantle helps against the rise of humidity and necessary in case of shallow groundwater.

External insulation in the case of refurbishment, allows insulating the pavements while maintaining the integrity and agility of the spaces without the burden of daily usage of the spaces involved.

STIFERITE's Class SK panels in polyiso foam are ideal when used in support of all external finishing elements. The use of the STIFERITE Class SK exterior insulation system allows:

  • limiting the thickness of the insulating material necessary to obtain the imposed thermal resistance
  • limiting the weight of the insulating layer
  • reducing the costs for accessories and finishing materials (tiles, profiles, thresholds, etc.)
  • ensuring the durability of the entire system and of the insulation, mechanical and dimensional stability performances
  • obtaining good reaction-to-fire performances of the whole system, (from Bs1d0, the best class for organic materials, to Bs2d0 according to the adopted system components
  • guaranteeing an excellent resistance to thermal shock and to the high temperatures given by the direct summer sun
  • using a smaller amount of resources thereby helping to limit the environmental impact of buildings.

Stiferite SK: Technical data sheet

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