RAP™
  • RAP™

    Ends Roof Rust and Primes for Water-Based Coating

    Reference # 10
    • Description
    • Specifications
    • FAQs
    • Resources

    Dual purpose RAP™ rust conditioner & Primer saves both material and labor with its one-coat application that prepares rusty metal for coating with water-based Topps Seal® WB. This waterborne product chemically converts powdery rust into a more stable oxide that gets bound within a vinyl barrier as it dries and becomes the primer coat.

    • This water-borne product chemically converts rust to a more stable oxide when applied after power-washing
    • Dries into a primer that blocks future rust after coating
    • Apply only to rusty areas
    • Designed for use with water-based coatings only

    Wet material: typical product characteristics

    Viscosity

    Water thin

    Weight per gallon

    9 – 10 lb.

    Solids

    10% min.

    VOC

    0

    Dry to touch @ 77° F (50% rel. humidity)

    1 hr.

    Coverage Rate

    200 ft2 per gallon applied only to rusty areas

    Q: I need to use a water-based roof coating on my roof due to coding regulations. I also have a significant amount of rust on my roof already. What should I do to remove the rust?

    A:  Topps has an excellent product to help prepare your rusted roof for a water-based coating. RAP™ actually converts rust into a more stable oxide and binds it into a primer layer for your water-based roof coating material.

    Q: What do I need to do before applying RAP™?

    A: It is recommended that you scrub any loose rust off of your roof surface with a metal brush and then thoroughly power wash the surface before applying RAP™.

    Q: How is RAP™ applied?

    A: Apply RAP™ immediately after drying by pump-up sprayer, long handled roofing brush or roller, working it in for maximum absorption. RAP™ contains special penetrating agents to permeate and saturate rust. Working it in helps get best results.