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Kooltherm (Supafen) Phenolic Pipe Insulation 76mm bore x 50mm wall

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Kooltherm Phenolic Pipe Insulation is a premium insulation solution designed for pipework in building services and HVAC applications. This product is one of the thinnest and most thermally efficient insulation products commonly available for pipework. It offers superior thermal conductivity of 0.025 W/mK, which allows specified thermal performance standards to be achieved with thinner insulation, thus optimizing space.

Kooltherm FM Pipe Insulation comprises sections of Kooltherm FM Insulation faced with a factory-applied foil vapour barrier jacket autohesively bonded to the insulation core during manufacture. Kooltherm FM Pipe Insulation is CE Marked in accordance with BS EN 14314.

Thermal Performance

With a 25 year aged thermal conductivity as low as 0.025 W/m·K (at 10°C mean), Kooltherm FM Insulation is the most thermally efficient insulation material commonly used. A low thermal conductivity allows specified thermal performance standards to be achieved with thinner insulation.


Key Product Specifications:

  • Thickness: Minimum 15 mm insulation thickness, supplied in 5 mm increments.
  • Length: 1 metre
  • Weight: Vapour Barrier Jacket: 100 +/- 30 g/m2
  • Operating Temperature: -50 - +110oC
  • Water Vapour Transmission: Vapour Barrier Jacket: <0.0048 g/(s.MN) (ASTM F 1249: 2020)
  • Fire Performance: BL - s1, d0 (reinforced aluminium foil vapour barrier jacket for outer diameters of up to and including 300 mm), B - s1, d0 (reinforced aluminium foil vapour barrier jacket for outer diameters above 300 mm between 50-100 mm thickness)


Kooltherm Pipe Insulation is CE marked in accordance with BS EN 14314: 2009+A1: 2013, which sets the standard for thermal insulation products for building equipment and industrial installations. It is available in a range of thicknesses to suit different performance specifications and can be used on mild steel, stainless steel, carbon steel, copper, multiplex, and plastic pipework in standard and non-standard pipe diameters.


Key Product Features:

  • Superior thermal conductivity of 0.025 W/mK.
  • Thin and efficient premium performance pipe insulation for HVAC and building services.
  • Lightweight and easy to handle, making the product quick to install.
  • Factory-applied aluminium foil vapour barrier jacket provides excellent fire and smoke performance.
  • Closed cell structure eliminates the risk of moisture absorption into the insulation.
  • European Classification (Euroclass) BL-s1,d0 achieved with the reinforced aluminium foil vapour barrier jacket facing exposed to the heat source, when classified to BS EN 13501-1: 2018 for pipework with an outer diameter up to and including 300 mm.
  • Available with FM Approval to FM Approval Class 4924.
  • Eurofins Indoor Air Comfort Gold certified, which is an outstanding material according to the VOC Indoor Air Quality emissions regulations.


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