Kooltherm FM Duct Insulation

Kooltherm Duct Corner UK 09-13

Premium performance duct insulation

Kingspan Kooltherm FM Duct Insulation is a premium performance thermal insulation designed for use on rectangular, circular and flat oval ductwork in HVAC / building services applications. It can be used to insulate ductwork, plenums and associated equipment, installed both indoors and outdoors.

Kooltherm FM Duct Insulation brochure

Kingspan Kooltherm FM Duct Insulation comprises a fibrefree rigid thermoset phenolic insulation core, faced on one side (external face) with an aluminium vapour barrier foil, and faced on the other side (internal face) with a glass tissue based facing. Both facings are autohesively bonded to the insulation core during manufacture.

Kingspan Kooltherm FM Duct Insulation has a 90% (or greater) closed cell structure and a compressive strength that typically exceeds 100 kPa at 10% compression. Solutions are available to accommodate the surface curvature of circular and flat oval ductwork with an outside diameter (O.D.) of 80 mm or greater.

Product information

Kingspan Kooltherm FM Duct Insulation, and its rigid thermoset insulation core, are Class 0, as defined by the Building Regulations.

Kingspan Kooltherm FM Duct Insulation is certified, by FM Approvals, to Factory Mutual Research Approval Standard – Pipe Insulation Class Number 4924 when manufactured and installed in accordance with the conditions defined by the approval.
An Ecoprofile, certified by BRE (Building Research Establishment) Certification to the 2008 BRE Environmental Profiles Methodology, has been created for Kingspan Kooltherm FM Duct Insulation produced at Kingspan Insulation’s Pembridge, UK, manufacturing facility. BRE has assigned the product a 2008 Green Guide Summary Rating of A+, the best possible rating.
The thermal conductivities (λ-values) detailed below are quoted in accordance with BS EN 14314: 2009 +A1: 2013 (Thermal insulation products for building equipment and industrial installations. Factory made phenolic foam (PF) products).
Temperature (°C) Thermal Conductivity (W/m.K)
-20 0.025
+10 0.022
+19 0.022
+25 0.023
+50 0.026
+80 0.030
Insulated Duct Support Inserts 1
Load-bearing insulation inserts can be fabricated on site from standard Kingspan Kooltherm FM Duct Insulation boards to suit the whole range of duct dimensions and insulation thicknesses. They can withstand the loads imposed by HVAC / building services ductwork at locations where ductwork
supports and hangers are installed.

Kingspan Kooltherm FM Flat Insulated Duct Support Inserts are flat rectangular strips of Kingspan Kooltherm FM Duct Insulation. They are used with rectangular and flat oval ductwork.

Kingspan Kooltherm FM Circular Insulated Duct Support Inserts are curved strips of Kingspan Kooltherm FM Duct Insulation or Kingspan Kooltherm FM Pipe Insulation.They can not be used to support the compressive loads imposed by pipework carrying water or other liquids and should not be used in such applications.

Kooltherm FM Duct Insulation DoP

Ducting CE Marking Technical Bulletin

Ductwork Commissioning Technical Bulletin

Kooltherm FM Duct Insulation brochure

Case Studies

Related products

Kingspan Industrial Insulation Ltd

For queries relating to duct insulation products

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Technical advice: 0808 168 7363

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