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Tropical #924 Eterna-Sil 100% Silicone Roof Coating, 5 gal, Light Gray, Tan, Dark Gray or Safety Yellow
Regular price $245.00Orders start at $399 — combine any items to reach the minimum. Learn more
Tropical #924 Eterna-Sil 100% Silicone Roof Coating, 5 gal, Light Gray, Tan, Dark Gray or Safety Yellow
Tropical #924 Eterna-Sil is a professional-grade, 100% silicone roof coating supplied in 5 gal pails. This solvent-free, high-solids, single-component moisture-cure coating forms an elastomeric, vapor-permeable membrane with outstanding ponded water resistance. Choose Light Gray, Tan, Dark Gray, or Safety Yellow for restore work over flat roofs, metal, single-ply, SPF, masonry, and concrete.
Key Features:
- 100% silicone: A professional-grade, 100% silicone liquid-applied roof coating.
- Solvent free: High-solids, solvent-free, single-component moisture-cure formulation.
- Ponded water resistant: Exhibits outstanding ponded water resistance for direct-bond application.
- Vapor permeable: The cured membrane is elastomeric and vapor permeable.
- Retrofit friendly: Applies directly over most aged PVC, TPO, EPDM, and Hypalon single-ply membranes pending adhesion testing.
- Fast rain resistance: Resistant to light rain within 60 to 120 minutes of application.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Tropical |
| Sell unit | 1 pail, 5 gal |
| Product line | #924 Eterna-Sil Premium Silicone Roof Coating |
| Available colors | ['Light Gray', 'Tan', 'Dark Gray', 'Safety Yellow'] |
| Available sizes | 5 gal pail |
| Material | 100% silicone, high solids, solvent free |
| Type | Single-component, moisture cure, liquid applied |
| Coverage | Elastomeric, vapor permeable membrane |
| Shelf life | 18 months |
| Cure note | Resistant to light rain in 60 to 120 min |
| Substrates | Low-slope or flat roofs, vertical walls, masonry, granulated BUR/Mod-Bit, granulated APP, metal, single-ply membranes, SPF, concrete |
| Limitation | Not recommended for permanent standing water longer than 72 hours |
Coverage & How Much You Need:
Coverage rates are not stated in the sources; determine spread rate from the manufacturer's technical data and account for surface texture and mil build before ordering pails.
Fit and Compatibility:
Designed for direct-bond application over low-slope and flat roofing, metal, granulated BUR/Mod-Bit and APP, single-ply membranes (PVC, TPO, EPDM, Hypalon pending in-field adhesion testing), SPF, masonry, and concrete. Over bituminous or asphaltic substrates, use Tropical #996 Bleed Blocker to prevent bleed-through or staining.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 5 gal pail of #924 Eterna-Sil silicone roof coating in your selected color.
Q: Which colors are available?
A: Light Gray, Tan, Dark Gray, and Safety Yellow.
Q: Can it go over an existing roof?
A: Yes, it can be applied directly over most existing aged single-ply membranes including PVC, TPO, EPDM, and Hypalon, pending positive in-field adhesion test results.
Q: How soon is it rain resistant?
A: It resists light rain within 60 to 120 minutes of application.
Q: Do I need a primer over asphalt roofs?
A: Over bituminous or asphaltic substrates, the manufacturer recommends Tropical #996 Bleed Blocker to prevent asphalt bleed-through or staining.
Q: Can it sit in standing water?
A: No, it is not recommended for permanent standing water for periods longer than 72 hours.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Silicone coatings like #924 are a strong choice for restoring aged single-ply, mod-bit, and SPF roofs where ponding is a concern but not permanent standing water. Always run the in-field adhesion test on aged single-ply before committing the full job, and use the #996 Bleed Blocker over asphaltic substrates to avoid discoloration. Confirm dry-film mil thickness and spread rate from current technical data before calculating pails.
Follow the safety data sheet for handling and application; verify substrate adhesion with a test patch and avoid applying if rain is expected before the coating cures.
Restore your roof with Tropical #924 Eterna-Sil 100% silicone coating in 5 gal pails.
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