Glass Mineral Wool - Thermo-teK LM Air ALU

Thermo-teK LM Air ALU


Thermo-teK LM Air ALU is a lightweight glass mineral wool mat, consisting of individual mineral wool strips (lamellas) that are bonded on one side to a tear-resistant, glass mesh reinforced aluminium foil.

Due to its excellent flexibility and lightweight in combination with good mechanical resistance and stiffness, it is a perfect solution for use in rectangular and circular ventilation ducts as well as on small, round objects and pipes.

Knauf Insulation Thermo-teK LM Air ALU is produced with ECOSE® Technology, a patented binder system, based entirely on renewable raw materials.


Defined Thermo-teK applications:

  • Rectangular air ducts – outside insulation
  • Circular air ducts – outside insulation
  • Pipe insulation – heating, water supply
  • Ducts & pipes in technical & acoustic rooms

The product is recommended for thermal, fire and sound insulation of defined Thermo-teK applications within technical insulation where:

  • a light and flexible solution is required
  • a good visual appearance after installation is needed


  • Maximum service temperature: 250 °C
  • Thermal conductivity (40 °C): 0.042 W/(mK)
  • Reaction to fire: A2-s1, d0
  • Density: 28 kg/m3


  • Lightweight and very flexible solution (much lighter than similar products)
  • One (universal) product for different applications, forms, diameters and sizes
  • Tear-resistant, sturdy aluminium lamination
  • Easy to handle, cut and install around different shapes (perfect edge fit on rectangular ducts, perfect bending, staying solid / excellent forming even on small diameter pipes)
  • Good mechanical resistance / stiffness (durable and robust)
  • Professional visual appearance on finished installations
  • User-friendly soft touch
  • ECOSE® Technology