Choosing the right asphalt roof coating can help extend roof life, seal leaks, and improve energy efficiency. This guide highlights five top options, covering elastomeric coatings, asphalt emulsions, and flexible sealants. Each product is designed for flat or low-slope roofs and foundations, with varying reflectivity, durability, and application methods. Review the features, compatibility, and installation considerations to determine the best fit for your project.
| Product | Brand | Type | Key Benefit |
|---|---|---|---|
| Black Jack 6190 Roof and Foundation Liquid Asphalt Coating | Gardner-Gibson | Liquid Asphalt Emulsion | Waterproofing and sealing for roofs and foundations |
| Rust-Oleum 710 Elastomeric Roof Coating | Rust-Oleum | Elastomeric | Very reflective white coating with energy savings |
| Sta-kool Sk-7805 Elastomeric Roof Coating | Gardner-Gibson | Elastomeric White | Siliconized white coating for durability |
| Liquid Rubber Waterproof Sealant | Liquid Rubber | Rubberized Sealant | Flexible, long-lasting waterproof membrane |
| Rust-Oleum 750 Elastomeric Roof Coating | Rust-Oleum | Elastomeric | Pro-grade coating with extended warranty |
Black Jack 6190 Roof and Foundation Coating
Black Jack 6190 is a 4.75- to 5-gallon non-fibered asphalt emulsion water-based coating designed for sealing, waterproofing, and resurfacing applications. It is odorless and solvent-free, making it suitable for residential and light commercial projects where ventilation is a concern. The product is manufactured in the United States, which some buyers associate with established distribution and local support. This coating can be used on roofs and foundations to provide a protective barrier against moisture while maintaining a flexible, adherent film. Consider this option when you want a low-odor solution with straightforward application for sealing and resurfacing tasks.
Rust-Oleum 710 Elastomeric Roof Coating
Rust-Oleum 710 is a 5-gallon elastomeric white roof coating featuring a 10-year warranty and a fast-curing formula. It offers waterproofing within hours and incorporates Cool Roof Technology with about 80% reflectivity, contributing to energy cost savings by reducing roof surface temperatures. The product is designed for flat and low-slope roofs, providing flexibility to accommodate roof movement. For homeowners seeking a long-term white coating with strong reflectivity and a relatively quick return to service, this option combines durability with energy efficiency.
Sta-kool Sk-7805 Elastomeric Roof Coating
Sta-kool Sk-7805 is a 5-gallon elastomeric white coating from Gardner-Gibson. Marketed as a siliconized white coating, it emphasizes durability and weather resistance for low-slope roofs. The siliconized formulation can help with UV resistance and longevity, making it suitable for roof surfaces subject to intense sun exposure. This option is often selected for projects seeking a bright white finish with improved abrasion resistance and flexible performance across temperature changes.
Liquid Rubber Waterproof Sealant
Liquid Rubber provides a flexible, rubberized membrane that adheres to flat roofs, metal, foundations, and other surfaces. With an industrial-strength bitumen base, it forms a durable barrier against water infiltration and is noted for high elongation (over 950%). This makes it a strong candidate for roofs with movement or gaps, and it can be brushed, rolled, or sprayed. The product is appropriate for both repair and preventative maintenance on a variety of substrates, including gutters and concrete surfaces.
Rust-Oleum 750 Elastomeric Roof Coating
Rust-Oleum 750 is a premium elastomeric roof coating designed for longevity, offering a 15-year warranty and a fast waterproofing timeline (within 4 hours). It features Cool Roof Technology with around 83% reflectivity for notable energy savings by reducing attic and roof temperatures. This coating is suitable for white roof finishes on flat or low-slope roofs and is positioned for customers seeking robust performance and extended protection against weathering and UV exposure.
AMES RESEARCH LABORATORIES MSS1 Maximum Stretch Roof Coating
AMES MSS1 Maximum Stretch is a white elastomeric acrylic roof coating with 650% elongation, designed to resist cracking and peeling. It offers up to 88% reflectivity, which lowers surface temperatures and cooling costs. The product adheres to metal roofing, tar, and rolled roofs and can be used for RV roofs, waterproof sealing, and general maintenance on low-slope roofs. Its high elasticity helps accommodate roof movement while maintaining a durable seal over time.
Buying Guide: Key Purchase Considerations
When selecting an asphalt roof coating, consider these factors to match your roof type, climate, and maintenance goals:
- Roof type and slope: Flat or low-slope roofs require materials with strong adhesion and weather resistance; elastomeric coatings often perform well in these conditions.
- Reflectivity and energy savings: White or light-colored coatings reflect sunlight, reducing cooling load in hot climates. Check the manufacturer’s claimed reflectivity and efficiency.
- Durability and warranty: Look for coatings with long warranties (6–15 years) and proven resistance to UV exposure, cracking, and ponding water.
- Application method: Consider brush, roller, or spray compatibility, and whether you need a product that cures quickly to minimize downtime.
- Compatibility with existing coatings: Some products work best on clean, sound surfaces; others can seal minor leaks and restore adhesion on older roofs.
- Ventilation and odor: Water-based or low-odor formulas are preferable for occupied buildings or areas with ventilation concerns.
- Foundation protection: Some coatings are suitable for foundations and fascia as well as roofing, offering a single-solution approach for multiple surfaces.
For best results, follow surface preparation guidelines, including cleaning, repairing visible cracks, and ensuring the roof is dry before application. Always apply in suitable weather windows as recommended by the manufacturer, and consider a test patch to verify adhesion and curing behavior on your specific surface.