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