Division C - Accepted Materials
Alsan RS Liquid Flashing System
by Soprema Inc.
| Material Acceptance and Product Details
The information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this material recommended or endorsed by the Guarantor. The preparation of a detailed specification is the responsibility of the Design Authority.
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- Manufacturer
- Soprema Inc.
- Accepted for the RoofStar Guarantee Program
- June 15, 2017
- Accepted for application in
- Waterproofing Roof Systems
Grade-level Waterproofing Systems
- Acceptance Criteria
- None (See Section 12.2. in the RGC Standards for Waterproofing Roofs and Grade-level Waterproofing)
- Product Summary
- The Alsan RS Liquid Flashing System includes the Accepted Materials Alsan RS 230 Flash and Alsan Flashing, which are complemented by:
- Alsan RS Fleece
- Alsan RS 276 Primer
- Alsan RS 222 Primer
- Alsan RS Catalyst Powder
- FLASHING REINFORCEMENT
- Definition
- Flexible reinforcement made of a woven 100 g/m² polyester.
- Application
- Vertical membrane terminations, details on the water plane; must be used with the polyester Alsan RS Fleece reinforcement embedded in a base and top coat of liquid.
- Format
- 0.15 m (6") wide x 30.5 m (100 ft) long strip.
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- Click below for the Technical Data Sheets

- Alsan RS Catalyst Powder TDS