Rust-oleum 277500 Epoxy Floor Primer Activator 2 Gal

Product Description

The RUST-OLEUM 277500 is the activator component for the Topside Vapor Barrier 100% Solids Epoxy system, a two-component epoxy primer engineered for concrete floors with elevated moisture conditions. This activator is mixed with the base component to form a high-performance epoxy primer that bonds tenaciously to damp and moisture-laden concrete slabs. It holds back up to 25 pounds of moisture vapor transmission per 1,000 square feet per 24 hours and remains unaffected by pH levels up to 14, making it suitable for demanding concrete substrate conditions encountered in commercial and industrial floor coating work.

This activator is used in resinous flooring systems where moisture vapor transmission control is required before applying a finish coating. It is appropriate for both residential and commercial concrete slab applications, including areas where subsequent layers of acrylic, epoxy, or polyurethane coatings will be installed. It can also serve as a primer beneath tile, carpet, or hardwood flooring installations. Apply only when air, material, and floor temperatures are between 60 and 80 degrees F. Do not apply in direct sunlight or when temperatures are rising.

Key Features

• Holds back up to 25 pounds of moisture vapor transmission per 1,000 square feet per 24 hours
• Unaffected by pH levels up to 14, suitable for highly alkaline concrete
• Tenacious adhesion to damp and moisture-laden concrete slabs
• Compatible with acrylic, epoxy, and polyurethane finish coat technologies
• Suitable for use under tile, carpet, or hardwood flooring as well as resinous broadcast systems
• VOC compliant in all 50 states

Compatibility

The 277500 activator is paired with base component 278269 (3-gallon base in a 5-gallon pail) to form the complete Topside Vapor Barrier 100% Solids Epoxy system. Compatible with most floor coating technologies including acrylic, epoxy, and polyurethane.

Installation Notes

Application is typically performed by flooring contractors or experienced concrete coating professionals. Ensure all mixing ratios and pot life guidelines from the product technical data sheet are followed precisely before applying to the substrate. Power-mix the activator and base components thoroughly before use, and do not apply to frozen substrates or surfaces where temperatures are expected to drop below the recommended range during cure. Consult local VOC regulations and applicable building codes before beginning any floor coating project.

Technical Specifications

• Package Size: 2 gallons
• Component Type: Activator
• System Type: 100% Solids Two-Component Epoxy
• Moisture Vapor Transmission Rating: Up to 25 pounds per 1,000 square feet per 24 hours
• pH Resistance: Up to 14
• Application Temperature Range: 60 to 80 degrees F
• Weight: 16.7 pounds
• UPC: 020066242008

Standard Information

• Brand: RUST-OLEUM
• Manufacturer Part Number: 277500