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Building and construction

Lightweight crack fillers - Low density microspheres with excellent filling capacity  

Expancel microspheres
Illustration showing volume comparison of 7 grams for different types of fillers including Expancel® lightweight filler, glass microspheres and calcium carbonate.

Expancel® Microspheres are especially suitable in crack fillers for repairing small holes and cracks and for large areas with shallow fillings

It can also be used to repair hair cracks, tape joints, nail holes, and other moderately rough surfaces. Low density crack fillers are popular because of their easy handling and their good filling capability.

Main benefits

  • With Expancel® microspheres in the crack filler you will have no problems with pinholes, which is common with for example glass spheres.
  • A creamy butterlike consistency makes the crack filler easy to spread.
  • Superior sandability.
  • Crack fillers with Expancel® microsphere are sprayable as the microspheres are resilient and can stand high pressure without being damaged. The microspheres regain their density after spraying while rigid lightweight microspheres run the risk of losing their volume. Expancel® microspheres minimize the wear on tools when spraying in comparison with inorganic fillers.
  • No eye or skin irritation. The dust from sanding contains broken microspheres without sharp edges. Broken inorganic microspheres,
    such as glass or ceramic, may cause eye and skin irritation.

Featured applications for Building and construction

  • Cement and concrete additives Additives for increased durability and strength, foaming and retarding agents as well as hardening accelerators and more.
  • Drymix mortar and gypsum additives Secure consistency in drymix materials with our high-quality additives Bermocoll®, Dissolvine® and Expancel®.
  • Geo-technical Levasil® colloidal silica is excellent for use underground, thanks to its high ground consolidation and water sealing capabilities.
  • Sealants and adhesives Use our Thioplast® polysulfide resins, Expancel® microspheres and Levasil® colloidal silica for improved performance in sealants and adhesives.
  • Lightweight crack fillers Expancel® microspheres are especially suitable in crack fillers for repairing small holes and cracks and for large areas with shallow fillings.
  • Refractory materials Nouryon offers a broad range of Levasil® colloidal silica for refractory materials.

Get in touch

Please contact our Expancel® microspheres experts.
We look forward to hearing from you.
For our existing customers, please log in to our MyNouryon customer portal.

Expancel® is a registered trademark of Nouryon in several countries worldwide.

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