Marlin Coatings Silicone Roof Sealant 5 Gallon White — 100% Self-Leveling, One-Coat Waterproofing

Marlin Coatings 100% Silicone Roof Sealant is a self-leveling, single-coat waterproof membrane designed to protect RVs, campers, trailers and commercial roofs from leaks while reflecting heat.

This professional-grade silicone roof coating cures into a flexible, ponding-water-resistant barrier that resists UV degradation and maintains reflectivity over time. Formulated for brush, roll or spray application, the product is offered in a 5-gallon pail and provides long-lasting coverage across a wide range of substrates including EPDM, TPO, PVC, fiberglass, spray foam and metal. With a high Solar Reflective Index and an average coverage rate around 60 square feet per gallon, it reduces interior heat gain and helps preserve roof substrates without frequent re-coating.

How quickly can I apply and finish a roof job with this silicone sealant?

Marlin’s silicone is designed for one-coat application, drastically cutting labor time compared with multi-coat systems. It flows and self-levels for even coverage, and can be applied with a brush, roller or an appropriate high-pressure spray rig for larger areas.

• Single-coat application minimizes labor and material costs.
• Brush, roll or spray application methods supported (spray requires 6,000 psi pump).
• Quick tooling and self-leveling reduce visible lap lines and touch-ups.
• Most residential or small commercial jobs can be completed in a single day.

Will this coating stop ponding water and resist UV damage?

The cured silicone forms a seamless, elastic membrane that does not shrink and stays flexible over time, making it suitable for surfaces where water pools. It is formulated to resist breakdown from UV exposure so the reflective white finish endures longer than many conventional roof coatings.

• 100% silicone chemistry maintains flexibility even with ponding water.
• High UV resistance prevents cracking and chalking for extended service life.
• Bright white finish has a Solar Reflective Index of 113, improving thermal performance.
• Doesn’t require frequent re-coating due to UV or water damage.

Which roof materials can I safely coat with Marlin Silicone Top Coat?

This sealant was developed to adhere to a broad set of roofing substrates commonly found on RVs, trailers and commercial buildings. Proper surface preparation improves adhesion and lifespan, but the formula is compatible with EPDM, TPO, PVC, metal, spray foam and fiberglass when applied per instructions.

• Compatible with EPDM, TPO, PVC, metal, spray foam and fiberglass roofs.
• Clean, dry and mechanically prepared surfaces yield best results.
• Primer may be required on certain substrates—follow product guidance.
• Works well for repairs, preventive sealing, and full roof coatings.

How much area does one 5-gallon pail cover and what performance can I expect?

Coverage varies by surface texture and application thickness; on average one gallon covers roughly 60 square feet, so a 5-gallon pail typically covers about 300 square feet at the recommended single-coat thickness. Expect a durable, waterproof finish that lowers interior temperatures and reduces the need for frequent maintenance.

• Average coverage: ~60 sq ft per gallon (about 300 sq ft per 5-gallon pail).
• Self-leveling consistency helps achieve uniform thickness across the roof.
• High reflectivity contributes to lower cooling loads in warm climates.
• Backed by the manufacturer’s product warranty for many applications.

Who is this for: Marlin Coatings 100% Silicone Roof Sealant is aimed at owners and maintenance professionals for RVs, campers, trailers and low-slope commercial roofs who want a long-lasting, UV-stable waterproof membrane that can be applied in a single coat. It’s ideal for property managers and DIYers who prioritize durability, heat reflection and minimal ongoing maintenance, and for contractors wanting a dependable silicone system compatible with common roof substrates.