Rust-oleum 347434 Roof Foundation Sealer 5 Gal Black

Product Description

The RUST-OLEUM 347434 is a non-fibered asphalt emulsion roof foundation sealer designed to function as a high-quality primer and thin base coat beneath black roof coatings. It fills surface pores and acts as a dampproofer on vertical surfaces to block moisture penetration in roofing and building applications. The sealer is rain resistant within 2 hours of application and can be applied by spray or roller, making it suitable for both large commercial roof areas and smaller repair projects. It ships as a single 5-gallon container weighing 70 pounds.

This product is intended for use on built-up roofing, modified bitumen roofing systems, and damp or green concrete substrates. It is commonly specified during re-roofing projects, new construction waterproofing, and foundation dampproofing work where a compatible asphalt-based primer is required before applying a black roof coating. Roofing contractors and waterproofing specialists are the primary installers in both residential and commercial settings.

Key Features

• Non-fibered asphalt emulsion formula primes and seals in a single application
• Rain resistant in 2 hours, reducing weather-delay risk during application windows
• Spray or roller application for flexible coverage on flat and vertical surfaces
• Fills surface pores to improve adhesion of subsequent black roof coatings
• Dampproofs vertical surfaces to resist moisture penetration
• Compatible with damp or green concrete substrates, eliminating extended cure-wait periods

Compatibility

Designed for use on built-up roofing, modified bitumen roofing systems, and damp or green concrete surfaces as a primer and base coat for black roof coatings.

Installation Notes

Roofing contractors and waterproofing professionals should apply this sealer in accordance with local building codes and the manufacturer application guidelines. Surface should be clean, free of standing water, and structurally sound before application. Allow the sealer to become rain resistant, typically within 2 hours, before exposing the surface to precipitation or applying subsequent coating layers. Proper ventilation and appropriate personal protective equipment should be used when working with asphalt-based products.

Technical Specifications

• Color: Black
• Formula Type: Non-fibered asphalt emulsion
• Container Size: 5 gallons
• Application Method: Spray or roller
• Rain Resistance: 2 hours
• Weight: 70 pounds
• Package Quantity: 1

Standard Information

• Brand: RUST-OLEUM
• Manufacturer Part Number: 347434