GacoFlex S20 Series coatings are solvent-free 96% solids, single-component waterproof elastomeric moisture-curing silicone coatings.

GacoFlex S20 Series are ideal for use as a maintenance coating system over pre-existing elastomeric roof coatings, metal roofs, built-up roofing, mineral cap sheet, and weathered single ply membranes (EPDM, PVC, Hypalon®, and TPO/CPA) on a roofing substrate where the membrane surface is in sound condition, but requires a renewal of the membrane surface due to the normal effect of aging and use.

GacoFlex S20 Series Coatings are the standard specification for liquid applied silicone coating used in sprayed-in-place polyurethane foam roofing systems.

GacoFlex S20 Series Coatings may also be used over concrete, coatings, and over plywood decking when properly applied over an approved base coat; please contact Gaco Western for specific recommendation.

When properly applied, the coating system provides a seamless weather-tight seal that protects the substrate from degradation caused by ultraviolet light, water and other normal weathering hazards.

• 100% silicone solvent-free roof coating
• 50 Year limited Warranty when applied properly
• 1 coat on smooth surfaces. 2 coats on granulated and rough surfaces.
• Coverage: 67 square feet per gallon to achieve approximate 22 dry mils.
• Mixing: Mix before application to ensure uniform color and consistency.
• Thinning: Product should not be thinned.
• Primer: Existing silicone coatings should not be primed. On all other substrates, apply GacoFlex E5320 2-Part Epoxy Primer/Filler according to label directions.
• Dry Time: Final coat should be allowed to cure 24 to 48 hours, depending on temperature and humidity, before suitable for light foot traffic.
• Clean Up: Clean application tools and equipment with 100% Pure Mineral Spirits Recirculate through lines and gun until residual coating is removed. DO NOT USE WATER OR RECLAIMED SOLVENTS.
• Prop 65: WARNING