Access the full cavity
Confirm a continuous fill path around internal features and narrow transitions.
Pourable granular microporous insulation
SilthermGranulate
A pourable microporous insulation for retained cavities that cannot be reached effectively with boards or preformed sections.
FormatPourable granulate
Typical granulometry0.3-2.5 mm
Packaging2 kg per bag
Classification1000 C
Filling complex geometry
Fill complex retained spaces with a pourable format.
Siltherm Granulate flows into enclosed cavities that are difficult to reach with cut insulation. The cavity retains the fill in service.
Choose the filling method
Pour or automatically feed the granulate; low-frequency vibration may assist placement.
Retain it in service
Contain the fill under the expected vibration, access and maintenance conditions.
Typical applications
Applications built around enclosed volume.
Granulate works best where the cavity can be filled cleanly and retain the material throughout service.
Chimney systems
Thin-wall chimney systems, pipe-in-pipe protection and radiation shielding near roof penetrations.
Fuel-cell and renewable-energy stacks
Retained spaces around stack geometry where shaped rigid insulation is difficult to apply.
Enclosed equipment voids
Cavities with limited access or geometry unsuitable for conventional rigid formats.
Technical documentation
Product data for design and specification.
Thermal values are reported with their test method and mean temperature. Filling density and cavity containment can be coordinated with the application.