SteelTherm 39 Super

SteelTherm 39 Super



SteelTherm 39 has exceptional acoustic absorption properties.


SteelTherm 39 Super is classified as Euroclass A1 to BS EN 13501-1 (Unfaced)

SteelTherm 39 does not exceed 25 Flame Spread, 50 Smoke Developed when tested in accordance with ASTM E84 (FSK)


SteelTherm 39 is a low to medium density glass mineral roll providing a thermal conductivity of 0.039 W/m.K.


  • Designed specifically for steel frame construction
  • Size to friction fit between steel studs at 600mm centres
  • Easy to handle and install with no gaps between adjacent rolls.


  • SteelTherm 39 is designed for the thermal insulation of external walls in steel frame constructions. SteelTherm 39 is friction fitted between steel studs and is 600mm wide to suit commonly used stud centres.

ECOSE® Technology

Knauf Insulation mineral wool products with ECOSE® Technology benefit from a no added formaldehyde binder, which is up to ECOSE Technology70% less energy intensive than traditional binders and is made from rapidly renewable bio-based materials instead of petroleum-based chemicals.

The technology has been developed for Knauf Insulation’s glass and rock mineral wool products, enhancing their environmental credentials without affecting the thermal, acoustic or fire performance. Insulation products made with ECOSE Technology contain no dye or artificial colours.


SteelTherm is manufactured in accordance with BS EN 13162, OHSAS 18001 Occupational Health and Safety Management Systems, ISO 14001 Environmental Management Systems, and ISO 9001 Quality Management Systems, as certified by Bureau Veritas.


SteelTherm is odourless, rot proof, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Handling and storage

SteelTherm is easy to handle and install, being lightweight and easily cut to size, where necessary. It is supplied enclosed in polythene which is designed for short term protection only. For longer term protection on site, the product should be stored either indoors, or under cover and off the ground. SteelTherm should not be left permanently exposed to the elements.

Product Data

SteelTherm 39 Sizing