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    ZRC® Low VOC Cold Galvanizing Compound

    The newest innovation in zinc-rich technology, ZRC® Low VOC Cold Galvanizing Compound offers the same superior performance with 40% lower levels of volatile organic compounds — a more environmentally friendly protection option.

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    At-A-Glance: ZRC 221 Cold Galvanizing Compound

    As the lowest VOC zinc-rich compound available, ZRC Low VOC Cold Galvanizing Compound offers the same protection as the original ZRC® Cold Galvanizing Compound with 40% fewer volatile organic compounds.

    Recommended Uses
    ZRC is widely used without topcoats in place of hot-dip galvanizing and is deployed as a high-performance base coat with a variety of topcoats. Used for:
    Hot-Dip Galvanizing Repair & Regalvanizing A more accessible option for repair of worn hot-dip galvanized materials.
    Weldments Repair Our original compound can be used to repair weldments.
    Long-Term Protection It’s proven to be effective long-term protection for: structural steel, water and waste facilities, power plants, transmission towers and antennae, steel decking and bridges, and numerous OEM uses.
    Inorganic Zinc Coatings Repair ZRC is also effective for inorganic zinc coatings repair.
    Galvalume® and Zinc Metallizing ZRC 221 can be used for Galvalume® and zinc metalizing projects.

    Flexible Application Formats

    Unlike hot-dip galvanizing, ZRC Low VOC is portable, flexible protection that can be applied in a variety of formats.

    Specifications: ZRC Cold Galvanizing Compound

    Here are the details for our industry-leading product:

    SSPC Paint Specification 20 – Zinc-Rich Coating: Type II – Organic; Level 1 – equal to or greater than 92% zinc dust by weight present in the dried film

    Zinc Dust Content
    Zinc Dust Content - ASTM D 520 Type III Zinc Dust — .002% maximum lead by weight

    Weight and VOC Notes

    Weight per gallon — not less than 26 lbs.

    VOC Content — ASTM D 3960, 221 g/l (1.8 lbs per gallon) maximum

    Color and Gloss
    Color and Gloss – Matte finish, “battleship grey”


    Manufacturers: Subject to compliance with requirements, provide galvanizing compound by one of the following: 

    1. ZRC Cold Galvanizing Compound, ZRC Worldwide 

    (, (800 831-3275 )) 

    1. No known equal. 

    Follow manufacturer’s application instructions


    Manufacturer to provide Certificate of Conformance to above criteria.

    Part Numbers

    50003 - ZRC 221 Low VOC Cold Galvanizing Compound Gallon

    Quotes from Our Customers

    It’s no secret we’re the industry-leading solution that lasts. Here’s what our
    customers have to say.

    Because of my experience in the field with this product, I always recommend ZRC in corrosive applications. I've used ZRC to regalvanize radar towers and catwalk gratings for the Navy at the base in Winter Harbor, Maine. I also used it on metal roofs and on salt water cookers at a canning company. In all cases, it has provided five years or more of rust-free protection.

    Roy Love | President, Loves Painting

    DAI needed a coating that was equivalent to hot-dip galvanizing since many major components are too big to fit in the galvanizing tanks," "ZRC provides the equivalent corrosion protection of ASTM A 123 galvanizing and is applied directly over sandblasted A 36 steel prior to top coating with chlorinated rubber or epoxy.

    Sandy Boog-Scott | Director of Materials, DAI

    Of all the painting systems I have used to protect ironwork in the past ten years, ZRC top coated with epoxy works the best — even in highly corrosive, humid environments.

    Doug McLean | President, McLean's Blacksmithing, Inc., Galveston TX

    Go With The Experts

    Imitation is flattering, but the proof is in the paint. ZRC Worldwide created zinc coating technology to combat corrosion and has been a worldwide leader in the space for 70 years.

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    ZRC galvanizing compound for iron and steel