Sikalastic®-621 TC

Sikalastic® 621 TC (US) is a single-component, cold-applied, highly elastic, aliphatic, moisture-triggered polyurethane base and top coat designed for easy application as part of the Sikalastic® RoofPro roofing and waterproofing systems.

  • Proven technology with over 25 year track record.
  • Single-component - no mixing and ready to use.
  • Fully reinforced with highly conformable Sika® Reemat™.
  • Moisture-triggered chemistry that is rapidly weatherproof after application.
  • Highly elastic and crack-bridging.
  • Seamless and fully-adhered.
  • Vapour permeable.
  • Resistant to UV and common atmospheric chemicals.