Sikalastic®-641 Lo-VOC

Sikalastic®-641 Lo-VOC roofing systems combine cold-applied, aliphatic, one-component, moisture-triggered polyurethane resins with glass fibre mat or polyester fleece reinforcement to create a seamless membrane and flashing system.
System components are:

  • Sika® or Sikalastic® Primer - Select primer per substrate material in accordance with Priming Guide.
  • Sikalastic®-641 Lo-VOC - Resin used for all systems with polyester fleece reinforcement.
  • Sika® Reemat™ Premium - Chopped strand glass fibre mat.
  • Sika® Fleece 120, 140, 170 - Non-woven, needle-punched polyester fleece in various weights.

  • Proven technology with over 25 year track record.
  • One-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.
  • Low odor formulation.
  • Highly elastic and crack bridging.
  • Seamless and fully adhered.
  • Vapor permeable.
  • UV-resistant and non-yellowing.
  • Abrasion and chemical-resistant.
  • Adheres to most common construction materials when suitable primer is used.