AEROPOR® lightweight-fillers are closed porous mineral hollow spheres belonging to the group of alumino silicates. These round and pressure resistant particles of mineral origin stand out due to their low water requirements and their natural colour. A specialized thermal refinement process sinters the surface of the lightweight aggregate and thus makes another hydrophobizing unnecessary.
The different AEROPOR® types distinguish themselves in grain sizes, grain distributions, bulk weights and their operative densities.


  • low real density (depending on type typically in between 0,6 – 0,7 g/cm<sup>3</sup>)
  • pressure resistant
  • closed porous
  • natural-white
  • round shape
  • free-flowing
  • inert
  • frost-resistant
  • temperature-resistant
  • heat-schock-resistant
  • resistant to chemicals
  • neutral in odour
  • environment-friendly
  • incombustible
  • dimensionally stable

Typical Applications

  • Light weight spackles
  • Lightweight plaster
  • Construction chemicals
  • Products made of polyester-, epoxid-, phenolic resin and polyurethane
  • Light-SMC and -BMC
  • Glass fiber (GRP)
  • Underseal and PVC-plastisoles
  • Structural colours and structured plasters
  • Mortar
  • Self-levelling screed
  • Heat insulation coating
  • Artifical marble
  • Anti-drumming mass
  • Refractory material
  • Adhesives
  • Sandwich Panels

Your Benefits

  • Pressure-stability, also in case of higher shear forces
  • Low water absorption
  • Reducement of density and hence weight savings of end products
  • Improvement of profitability due to reduction of the need for binders and resins
  • Higher productiveness of end products (layer thickness per surface)
  • Good flow characteristcs
  • Higher input of fillers
  • Improved head and noise protection
  • Reduced shrinking
  • Improved results of flexural strengths and impact strenghts
  • Increased resistance to chemicals
  • Increase of packing densities and bonding strenghts
  • Mineal and safe source of raw material
  • Special fractions on request
geschlossen porige Mineralhohlkugeln


Screening (µm)

AEROPOR® 18050-180
AEROPOR® 30050-300
AEROPOR® 500250-500
AEROPOR® 1000500-1000
AEROPOR® 1200500-1200
AEROPOR® 2000200-2000