Sikalastic®-621 TC

Single component saturating resin for Sikalastic® RoofPro systems

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

  • Proven technology - over 30 year track record
  • Single component – no mixing and ready to use
  • Fully reinforced with highly conformable Sika Reemat or Sika Fleece
  • Moisture triggered chemistry that is rapidly weatherproof after application
  • Resistant to ponding water
  • UV resistant - Highly reflective and resistant to yellowing
  • Cold applied - requires no heat or flame
  • Seamless roofing/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
  • Root resistant
  • Easily recoated renewable system - no stripping required
  • Good adhesion to most substrates- see primer chart
  • Vapor permeable - allows substrate to breathe
  • Strong resistance to common atmospheric chemicals