Kooltherm® FireSleeves can be supplied in the following sizes:


NB (mm) 20mm thick 25mm thick 30mm thick 35mm thick
15 Yes Yes Yes
20 Yes Yes Yes
25 Yes Yes Yes
32 Yes Yes Yes
40 Yes Yes Yes
50 Yes Yes Yes
65 Yes Yes Yes
80 Yes Yes Yes
100 Yes Yes Yes Yes
125 Yes Yes Yes Yes
150 Yes Yes Yes Yes


NB (mm) 20mm thick 25mm thick 30mm thick
15 Yes Yes Yes
22 Yes Yes Yes
28 Yes Yes Yes
35 Yes Yes Yes
42 Yes Yes Yes
54 Yes Yes Yes

Installation Guide

  • Prepare opening in the wall, with minimal disturbance to surrounding structure.
  • Open Kooltherm® FireSleeve and install the 300mm lined Kooltherm® Insulation onto the pipe. Fit the 205mm stainless steel fire sleeve over the intumescent lined Kooltherm® FM Pipe Insulation and ensure that the stainless steel clasp is fully engaged.
  • Ensure the Kooltherm® FireSleeve is positioned centrally within the opening.
  • Seal any gaps of 5mm or less around the exterior surface of the Kooltherm® FireSleeve with a 2 hour Fire Rated Intumescent Mastic. Large gaps over 5mm should be filled with an appropriate fire rated filler or mortar.
  • Install Kooltherm® FM Pipe Insulation flush to the Kooltherm® FireSleeve and vapour seal in accordance with the project specification.

kooltherm installation

Fire Perfomance

Kooltherm® FM Pipe Insulation products and Pipe Support systems achieve a BL-s1, d0 classification to EN 13501-1 when tested under the European Fire Classification System (Euroclass) for ‘reaction to fire’.

Technical Advice

To compliment its industry leading range of pipework insulation systems, Kingspan Tarec®‘s Pipeline Technical Advisory Service, provides customers with free, expert guidance on everything from regulatory requirements and best practice to detailed project specific advice and solutions.