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Gaco Western GacoFlex S2100 100% Silicone Roof Coating, White, 5 Gallon Pail
Regular price $400.00Gaco Western GacoFlex S2100 100% Silicone Roof Coating, White, 5 Gallon Pail
GacoFlex S2100 is a solvent-free, single-component 100% silicone roof coating in white, supplied in a 5 gallon pail. Formulated to resist dirt pick-up and maintain solar reflectivity, it renews weathered and leaking roofs and withstands permanent ponding water. Rated UL 790 Class A, FM 4470 approved and Florida Building Code approved.
Key Features:
- 100% silicone: Single-component elastomeric 100% silicone coating for renewing weathered roofs.
- Dirt resistance: Solvent-free formula resists dirt pick-up, showing 40% less dirt accumulation and 2x whiteness retention versus competitive silicones.
- Ponding water proof: Will not soften, bubble or degrade under permanent ponding water.
- High solids: 95% solids content, so nearly all product stays on the roof.
- Class A rated: UL 790 Class A and FM 4470 approved; Florida Building Code approved.
- Recycled content: Contains 37% recycled content, no crystalline silica, and may contribute to LEED points.
- Water sheeting: Water sheeting action helps roofs dry faster, keeping the surface whiter longer.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Gaco Western |
| Manufacturer model | S2100-5 |
| Sell unit | 5 gallon pail |
| Product line | GacoFlex S2100 |
| Profile / style | Solvent-free 100% silicone elastomeric roof coating |
| Color | White |
| Coverage per unit | Not stated; coverage varies by substrate and film build |
| Material | 100% silicone |
| Finish / texture | White elastomeric coating |
| Fire rating / wind rating / warranty | UL 790 Class A; FM Approved (FM4470); limited 5-year warranty |
| Weight | 40 lb |
| Approvals | UL790 Class A; FM 4470; GacoRoofFoam F2733 Approved; Florida Building Code Approved; LEED contribution |
Coverage & How Much You Need:
Coverage per pail depends on substrate, condition and film build and is not stated in the sources; refer to the manufacturer's coverage calculator and apply the specified mil thickness over a sound, primed surface.
Fit and Compatibility:
Suitable as a maintenance coating over existing elastomeric roof coatings, metal roofs, built-up roofing, mineral cap sheet, weathered single-ply membranes (EPDM, Hypalon, TPO/CPA) and sprayed polyurethane foam. Pairs with GacoRoofFoam F2733 per the approval listing.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 5 gallon pail of GacoFlex S2100 white silicone coating.
Q: What roofs can it go over?
A: Existing elastomeric coatings, metal, built-up roofing, mineral cap sheet, weathered EPDM, Hypalon, TPO/CPA and spray polyurethane foam.
Q: Will it handle ponding water?
A: Yes, S2100 will not soften, bubble or degrade under permanent ponding water.
Q: What ratings does it carry?
A: UL 790 Class A, Factory Mutual FM4470 approval, GacoRoofFoam F2733 approval and Florida Building Code approval.
Q: How much area does a pail cover?
A: Coverage is not stated in the listing; follow the manufacturer's application rate for your substrate and target mil thickness.
Q: What warranty applies?
A: A limited 5-year warranty is listed for this product.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
S2100 is the go-to pick for restoring an aging roof where ponding water rules out acrylics. Clean and prime the substrate per Gaco's instructions, and apply in the specified passes to reach the designed mil thickness. Its dirt-shedding whiteness makes it the better choice over standard silicones when reflectivity matters.
Apply per the manufacturer's instructions in a well-ventilated area with appropriate PPE, and follow local fire and building code during roof work.
Restore your roof with GacoFlex S2100 white silicone coating in a 5 gallon pail.
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