Sikalastic®-621 TC

Single component saturating  and top coat resin for Sikalastic® RoofPro roofing systems

Sikalastic®-621 TC is a cold applied, highly elastic, aliphatic, single component, moisturetriggered polyurethane resin designed for easy application as part of Sikalastic®-601/621 RoofPro roofing systems.

  • Proven technology - over 30 year track record
  • One component – no mixing, easy and ready to use
  • UV resistant - Highly reflective (RAL9016) and resistant to yellowing
  • Cold applied - requires no heat or flame
  • Seamless roof waterproofing membrane
  • Compatible with Sika® Reemat Premium - easy to detail
  • Fast curing - free from resin damage almost immediately on application
  • High elastic and crack-bridging - retains flexibility even at low temperatures
  • High root resistance
  • Easily re-coated when needed - no stripping required
  • Good adhesion to most substrates- see primer chart
  • Vapour permeable - allows substrate to breathe
  • Strong resistance to common atmospheric chemicals