Materials:Sikalastic 601/621

Notice to the Reader: The roofing assembly / material information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Manufacturer: Sika Canada Inc. Accepted for RoofStar Guarantee Program February 2020 Accepted for application in Roof Waterproofing Systems Grade-level Waterproofing Systems Product Summary Sikalastic 601 BC (US) and 621 TC (US) roofing and waterproofing systems combine cold applied, aliphatic, single component, moisture-triggered polyurethane resins with fiberglass 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 601 BC (US) - Base layer resin incorporating a Reemat fiberglass reinforcement Sikalastic 621 TC (US) -Top layer resin incorporating a Reemat fiberglass reinforcement. Resin used for all other systems with both Reemat fiberglass and polyester fleece reinforcement Sikalastic Reemat Premium - Chopped strand fiberglass mat Sika Fleece 120, 140, 170 - Non-woven, needle-punched polyester fleece in various weights (adapted from the Technical Data Sheet) Conditions and Limitations None NOTE: Sikalastic 601 BC and 621 TC are Accepted as a system (in combination with their associated components) by the RGC for Waterproofing Systems on roofs and at grade.

Click below for the Technical Data Sheet.

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