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 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) 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. Applicator manual

Click below for the Technical Data Sheet.

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