Kooltherm FM Pipe Insulation - UK

Kooltherm FM Pipe Insulation in the UK

Insulating pipework in buildings offers a number of benefits including

  • Reduced heat loss,
  • Saves energy
  • Protects the pipe and its contents against severe temperatures.

Kooltherm FM high performance pipe insulation is the thinnest and most efficient product available for the insulation of pipework in building services / HVAC applications and is suitable for both new build and refurbishment projects in the residential, commercial, institutional, industrial and leisure sectors.


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.

Kooltherm FM Pipe Insulation is available in a range of thicknesses to suit different performance specifications and may be used on mild steel, stainless steel, carbon steel, copper and plastic pipework in standard and non-standard pipe diameters. Kooltherm FM Pipe Insulation is manufactured using state of the art continuous and slotted board technologies. Both methods feature the use of a unique bore coated liner and minimise production wastage.

Kooltherm FM Pipe Insulation manufactured on the continuous process is supplied in 1 metre lengths and pipe insulation manufactured from slotted board is supplied in 1.165 metre lengths. Kooltherm FM Pipe insulation is available in a standard density of 37 kg/m3. Higher density pipe insulation sections and insulated pipe supports fabricated from 60 kg/m3, 80 kg/m3 and 120 Kg/m3 densities are also available.

Vapour Barrier Jacket

All Kooltherm FM Pipe insulation products and systems are faced, as standard, with an extremely durable and protective low vapour permeability aluminium foil or theatre black vapour barrier jacket reinforced with a glass scrim.

The vapour barrier jacket is factory-applied to avoid onsite application, which carries the risk of vapour barrier damage and with it, a risk to the integrity of the system. This also reduces the labour cost for installation of the Kooltherm FM Pipe Insulation System.

Kooltherm Thickness Comparison


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.

The superior thermal performance of Kooltherm FM Insulation derives mainly from its closed cell properties. Its closed cell structure has been optimised to resist heat transfer. The closed cells have a small solid to void volume ratio, are small and uniform in size, and their construction very fine with extremely thin walls and minimum point contacts (struts). They are filled with a thermally efficient CFC/HCFC-free blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). As a result of its closed cell, fibre free structure, Kooltherm FM Insulation is unaffected by air infiltration – problems that can be experienced with mineral fibre and which can reduce thermal performance.


FM Approved logoKooltherm FM Pipe Insulation products and systems have a densely cross-linked structure that makes them difficult to ignite and when subjected to fire, the outer surface forms a strong carbonaceous layer that limits heat generation and retards further flame spread.

The excellent fire and smoke performance characteristics of Kooltherm FM Pipe Insulation products and systems clearly demonstrates their suitability for the designated application, with best in class European Reaction to Fire performance of BL,s1,d0. Kooltherm FM Pipe Insulation is FM Approved per Approval Standard Class 4924.

EnvironmentalBRE A+

Kooltherm FM Pipe Insulation can directly contribute towards the award of several credits under the previous and current versions of BREEAM. The product holds a highest possible BRE Green Guide rating of A+ and is manufactured to a BS EN ISO 14001: 2004 scheme, qualifying for the Responsible Sourcing credit. In addition, Kingspan Industrial Insulation offers a ‘zero landfill, take-back’ scheme, using waste product collected from off-site manufacturers for recycling or energy recovery.

Moisture Resistance

Kooltherm FM Pipe Insulation has a 90% (or greater) closed cell structure, which makes it non-wicking and highly resistant to moisture penetration. The risk of moisture absorption into the insulation is effectively eliminated
as the factory-applied facing to Kooltherm FM Pipe Insulation products and systems provides a high performance vapour barrier jacket.

Recommended Thickness and Technical Data




Kooltherm PSISKT Technical DataKT Spec guide FCKT Install FC