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The only moisture-cured polyurethane rated 10 out of 10 after 15,000 hours of ASTM salt-spray testing. Single-component. Surface-tolerant. Made in USA. US Patent 5,695,812.
Arin Shahmoradian — Official USA Distributor, Volta Coatings
Yes. Boyd Gaming's Blue Chip Casino Boat saved $2,000,000 by choosing Rust Grip® over sandblasting. Chevron USA and Workstrings International tested 18 different industrial coatings on offshore drill pipes over 8 years and declared Rust Grip the top performer. It bonds directly to firm rust, metal, concrete, masonry, and wood — defending critical infrastructure against chemical solvents, acid splashes, and severe weather.
Because Rust Grip® cures by drawing moisture from the air, high-humidity environments actually speed up the curing process — making it the ideal moisture-cured polyurethane for offshore, marine, tropical, and industrial applications. It offers six core advantages for extreme corrosion environments where traditional epoxy or zinc-rich primers fail.
Paint directly over firm rust. No white-metal sandblasting required.
Primer, mid-coat, and top-coat in one can. No Part A + Part Bmixing.
Brush, roller, or airless sprayer. Apply on metal, concrete, masonry, or wood.
Loaded with metallic aluminum pigment for additional mechanical strength.
Continuous surface temperatures up to 325°F after curing.
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Long-term stability in unopened containers under normal conditions.
Rust Grip® is proudly made in the USA under US Patent 5,695,812 and has been rigorously validated by global industrial entities and standardized testing.
Perfect 10 out of 10 rating on ASTM B117 (15,000-hour SaltSpray Test at 6 mils DFT) and ASTM D5894 (10,000-hour Cyclic Salt Fog Test at 6 milsDFT).
Outperformed all tested zinc-free, single-componentpaint systems. Initial pull strength 1,813 PSI; 1,638 PSI after 12 cycles.
Officially designated as the "Best Coating Tested" in independent evaluation.
Class-approved by the American Bureau of Shipping for marine vessels.
Rust Grip® is engineered to outperform traditional 3-coat systems, zinc-rich primers, andhot-dip galvanizing. Below are the verified technical performance specifications backingevery project, every certification, and every case study on this page.
Rust Grip® cures to a surface tensile strength of 6,780 PSI — nearlydouble the strength of standard US highway concrete (3,500 PSI). This is achieved througha metallic aluminum pigment loading and a unique encapsulation cure mechanism.
Rust Grip® passed 15,000 hours of ASTM B117 salt spray testing witha perfect 10 out of 10 score — equivalent to approximately 30 years of marine corrosionexposure. Field installations document 20+ years of zero-degradation service in extremeenvironments.
Rust Grip® has a permeability rating of 0.24 — extraordinarily low. Thecoating seals air and moisture out of the substrate completely, eliminating the conditionscorrosion needs to develop. "No air, no moisture = no corrosion."
Rust Grip® has a low initial viscosity that wets the surface, thenpenetrates into the pores of the substrate. As the coating cures by drawing moisture fromthe air, it microscopically swells inside those pores — anchoring itself into the surface andbecoming part of the substrate rather than just bonding on top. This is fundamentallydifferent from a surface coating.
Rust Grip® begins its cure cycle within 1 hour of application. It reachesfull surface tensile strength of 6,780 PSI in approximately 3 weeks. Higher humidity andtemperature accelerate the cure; lower humidity slows it.
No separate topcoat product is required. Rust Grip® is applied in twocoats (light-to-medium rust) or three coats (heavy rust or marine applications) of the sameproduct — replacing what would normally be a primer + mid-coat + topcoat system. It canoptionally be top-coated with Enamo Grip® or Super Therm® if a specific color or additionalUV resistance is desired.
Yes. Rust Grip® holds a Class A fire coating rating. In the event of afire, it will not contribute to flame spread and will help prevent fire propagation across thecoated surface.
Rust Grip® is USDA-approved for use around food, completelylead-free and chromate-free. It is also ASTM E1795 certified as a Biohazard Encapsulator— meaning it can permanently encapsulate lead-based paint, asbestos, and otherhazardous coatings on existing infrastructure, eliminating costly removal.
A long-term lab and field study by Chevron USA and WorkstringsInternational — published by the Society of Petroleum Engineers — tested 18 differentindustrial coatings on offshore drill pipes over 8 years. Drill pipes are the most extremecorrosion environment in industry. Rust Grip® was the top performer of all 18 coatingstested.
Direct alternative to zinc-rich primers and hot-dip galvanizing. Outperforms both in surface prep, application speed, service life, and total project cost.
"For projects where surface access is limited, down time is costly, or existing rust is present, Rust Grip® eliminates the logistical complexity of zinc-rich systems and the off-site requirements of hot-dip galvanizing — at lower total project cost and longer documented service life."
Rust Grip® has documented success on major public works and industrial projects worldwide, proving exceptional ROI.
8-year exterior drill pipe field test. Rust Gripdeclared the best coating tested. Published by the Society of Petroleum Engineers.
Boyd Gaming saved $2,000,000 by using Rust Grip instead of traditional sandblasting.
22-year re-inspection report showszero coating degradation. Also deployed extensively on the Hoover Dam Bypass Bridge.
Homeowner used minimal surface prep and fast curing for long-lasting residential corrosion protection.
Large marine fleet operator uses Rust Grip with Enamo Grip topcoat to encapsulate existing corrosion on working vessels.
Structural steel and roofingcoated with Rust Grip for ISO 12944-6 C5H level performance.
Rust Grip® is a single-component, moisture-cured polyurethane loaded with aluminum pigment. Below are the specifications and application parameters verified in lab and field testing.
Rust Grip® is a tough, single-component moisture-cure polyurethane coating loaded with metallic aluminum pigment for additional strength. In most cases, white-metal blasting is notrequired. It resists chemical solvents and acid splashes. One product replaces a traditional 3-product primer + mid-coat + topcoat system, applied in 2 coats for light-to-medium rust or 3 coats for heavy rust and marine applications.
Rust Grip® can be applied to metal, concrete, masonry, and wood. Application is by airless sprayer, brush, or roller. Application thickness depends on surface profile. Standard lab testing is conducted at 6 mils DFT per coat.
Access the complete technical data, application guidelines, and independent testing reports for Rust Grip®.
Rust Grip was awarded the E. Crone Knoy Award for Innovation on the Hoover Dam Bypass Bridge. The structure owner was the US Federal Highway Administration. The project is in perfect condition after almost 14 years of service. Topcoats are Super Therm and Enamo Grip.
Stop wasting budget on sandblasting and multi-coat systems. Contact Volta Coatings, the official USA Distributor of Rust Grip®, at +818-696-3786 or request information online to calculate your spread rate and purchase your supply.
"After meeting your company at the Off Shore Arabia Conference in April 2010, we decided to use Rust Grip on the deck of our ABS Class vessel Mubarak Challenger. It has now been over a year, and there are still no signs of corrosion development as originally promised by your company."
"I try to rustgrip every piece of steel I can, because it really helps us save time and money on maintenance. Once I rustgrip something I do not have to worry about it again. We love your product and we are always trying to make our job easier, and this is one less thing we have to worry about once it is on. The pictures with the rusted, pitted rams are from 2019, where we took them off the aframe, removed the rust, applied the rustgrip and painted them with a one part polyurethane paint."
"I was using it on Al Mafyar LNG Carrier for last few years and it shows excellent performance on hard to maintain areas."
"Its been a year since the application of special coating of 1st & 2nd Coat: (Spray) Rust Grip & 3rd Coat (spray) Enamo Grip , the overall results of protection against environmental corrosion by the coatings is very good."
Rust Grip is available in either a single gallon or 5 gallon pail.
No. Rust Grip® is a single-component system that requires no mixing of Parts A and B, saving time on the job site.
Unlike traditional coatings, high-humidity environments actually speed up the curing process because the formula draws moisture directly from the air to harden.
Once fully cured, Rust Grip® provides extreme heat resistance and can withstand continuous surface temperatures up to 325°F.
Rust Grip® features exceptional long-term stability with a 3-year shelf life when kept in unopened containers.
The coverage rate is 90 sq. ft. per gallon for light-to-medium rust requiring two coats. For heavy rust or marine applications requiring three coats, the rate is 61.2 sq. ft. per gallon.
No. Rust Grip® is designed to be applied directly over firm, existing rust, eliminating the need for expensive white-metal sandblasting.
It securely bonds to a wide variety of surfaces, including metal, concrete, masonry, and wood.
For light-to-medium rust, two coats are recommended. For heavy rust or severe marine environments, a three-coat application is standard.
The coating is 62.2% solids by weight and 51.4% solids by volume, providing a heavy-duty protective layer.
Yes. It is engineered to defend critical infrastructure against chemical solvents and acid splashes.
