ALSAN RS Fleece is a proprietary non-woven polyester reinforcement used in ALSAN RS liquid membrane applications. ALSAN RS Fleece is available in a roll or in pre-cut detail kits for corners and small and large pipes.

*ALSAN RS Fleece should not be used with ALSAN Flashing or COLPHENE LM BARR Products. These products should be used with SOPREMA Polyfleece. For more information visit each products respective product data sheet.

Product Properties

  • Material Reinforcement


Mix and apply ALSAN RS products in strict accordance with published instructions. Apply mixed resin to the prepared surface and roll out ALSAN RS Fleece into the liquid resin, making sure that the roll is unrolling smooth and without any wrinkles. ALSAN RS Fleece will begin to saturate into the liquid resin. Using a roller, wet the fleece with resin, applying light pressure. Roll the fleece with a nap roller to eliminate any air bubbles, wrinkles, etc. Apply additional liquid resin mix on top of ALSAN RS Fleece until fully saturated and the layer of resin is fully and uniformly applied. Allow a 2 inch (5 cm) overlap at the side laps and 4 inch (10 cm) overlap at all flashing tie-ins and end laps.


Testing & Approvals

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Related Projects

San Francisco Airport – San Francisco, California

San Francisco International Airport is the 13th largest airport in the United States featuring four modern runways. The new International Terminal opened in 2000 and had the distinction of being the largest terminal building ever built in North America. SOPREMA was able to provided a cost-competitive, UL Class A system with a 20-year labor and material warranty.

The Metropolitan Museum of Art – New York City, New York

SOPREMA® waterproofing products were used during the museum’s expansion including COLPHENE® 3000 to provide watertight solutions for the foundation. This self-adhered waterproofing system is a flexible, versatile, dependable, roll-type waterproofing membrane.