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HYPERSEAL®-Expert is a novel low modulus expansion joint sealant, especially formulated to ensure bubble free cure even at very high temperature and humidity climatic conditions. The product displays excellent thixotropy allowing its use even in very large expansion joints. It cures by reaction with atmospheric humidity to produce a joint sealant with a 50% joint movement accommodation factor and excellent adhesion on substrates traditionally problematic for PU sealants.


  • ISO-11600;
  • Type F - class: 25LM;
  • DIN-18540-F;
  • ASTM C920;
  • U.S. Federal Specification TT-S-00230C;
  • Type II Class A.
  • Hyperseal EXPERT is CE certified according to EN 15651-1 (Sealants for Facades) and 15651-4 (Sealants for Floor Joints with Foot traffic).

RECOMMENDED FOR sealing joints in:

  • insitu concrete;
  • expansion concrete plates;
  • precast panels,brick and block work;
  • water tanks and swimming pools;
  • metal frames;
  • aluminum windows and panels;
  • irrigation channels
  • glass;
  • granite & marble.