Single-bake efficiency, Sherwin-Williams OneCure targets faster OEM powder lines

Edited by ad hoc news B2B & Pro Desk. Reviewed before publication on 06/15/2026 at 10:23 PM ET. Details in the imprint.

Sherwin-Williams is putting cycle time and energy use under pressure in industrial paint shops with its new OneCure powder coating portfolio, a single-bake system designed for OEM production lines. The company’s general industrial coatings unit says OneCure allows a powder primer and topcoat to be applied dust-on-dust and cured together in one oven pass, rather than two, which can translate into higher throughput, lower gas consumption and less work-in-progress on high-volume lines. According to RV Business coverage of the launch, the portfolio is aimed squarely at OEMs building everything from recreational vehicles to agricultural equipment.

What Sherwin-Williams OneCure does on the line

At the technical level, OneCure combines a specially formulated epoxy or epoxy-polyester primer with a polyester or polyurethane topcoat that share a patented crosslinking chemistry, so both layers reach full cure in a single bake profile. Sherwin-Williams describes the system as a dust-on-dust, or DoD, approach: operators spray the primer onto a pretreated metal substrate, apply the topcoat directly over the uncured primer after a controlled flash time, and then send the part through one oven cycle where both coatings melt, flow and cure together. This is fundamentally different from conventional powder systems that require baking the primer, cooling, then applying and baking the topcoat in a second pass. A recent Coatings World report on the launch highlights Sherwin-Williams’ claim that the single-bake approach can cut total cure time nearly in half compared with many two-bake setups.

For OEMs, the most immediate impact is on layout and takt time. Eliminating a full bake-and-cool step can free up one oven or allow existing tunnel ovens to carry more parts per hour, which is particularly relevant for products like RV chassis, metal cabinets, shelving systems or agricultural frames that are often constrained by oven length and burner capacity. Sherwin-Williams positions OneCure as compatible with common metal substrates used in these segments, including mild steel and galvanized steel, provided that pretreatment and line conditions meet the company’s process window. The portfolio includes primers tuned for edge coverage and corrosion protection and topcoats offered in multiple colors and gloss levels so OEMs are not forced into a narrow aesthetic palette to gain the process advantage.

Beyond throughput, Sherwin-Williams promotes OneCure as a way to manage operating costs. With only one cure cycle to run, gas-fired ovens may consume less energy per finished part, and operators spend less time handling racks between primer and topcoat stages. Some OEMs also see a fit with labor-constrained environments: consolidating two discrete coating stages into one continuous operation can simplify staffing around the booth and oven, reducing the number of manual touchpoints on each part. To limit risk at high speed, Sherwin-Williams and early adopters emphasize dialing in film build and electrostatic settings carefully so that the primer layer does not overcharge and shield the topcoat, an issue that can arise in other dust-on-dust scenarios if not engineered properly.

Performance remains a central question whenever a finishing department considers changing a proven two-bake specification. Sherwin-Williams says OneCure’s crosslinking chemistry is engineered to deliver intercoat adhesion and chip resistance comparable to, or better than, many conventional primer-topcoat systems in salt spray and cyclic corrosion tests, provided the line follows the company’s recommended cure window. Field reports cited by trade publications describe OEMs using OneCure to coat RV frames and other exposed underbody structures where stone chipping and moisture can be severe, suggesting the system is being applied beyond purely cosmetic surfaces. Users looking to validate the technology typically run parallel panels through their existing specification and OneCure’s process to compare gloss retention, impact resistance and corrosion creepage before signing off changes with their customers.

In practice, OneCure is not a drop-in solution for every line. OEMs must confirm that their ovens can reach and hold the specified part metal temperature across the profile and that the mix of part geometries does not create cold spots that compromise cure on heavy sections. Line engineers may also need to revisit pretreatment, racking density and conveyor speed to keep film builds inside the OneCure process window, particularly when mixing thick structural weldments with lighter-gauge components on the same line. Sherwin-Williams indicates that its technical service teams work on-site with OEMs to map these variables before signoff, and the company is marketing the portfolio initially to customers willing to invest engineering time to unlock the promised cycle-time reductions.

Strategically, OneCure extends Sherwin-Williams’ general industrial coatings portfolio into a niche where process economics can be as decisive as color or corrosion performance. The system gives the company another hook in negotiations with large OEM accounts that are reevaluating finishing layouts in response to energy costs and labor constraints, and it can complement existing liquid and powder lines by targeting specific product families where single-bake operation delivers the best payback. Sherwin-Williams, which is headquartered in Cleveland and listed on the New York Stock Exchange, reported in its latest filings that general industrial coatings remain a core growth area within its Performance Coatings Group. Sherwin-Williams’ investor information and press releases also underscore the role of industrial technologies like powder coatings in its long-term capital allocation and acquisition strategy. Shares of The Sherwin-Williams Company (US8243481061) traded on the NYSE under the ticker SHW at around $330 on 06/14/2026.

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