If you're responsible for specifying coatings or chemicals for an industrial operation, you've probably typed at least one of these questions into a search bar. I'm a quality compliance manager—I've spent years reviewing coating specifications, auditing applicators, and rejecting batches that don't measure up. Here are the six questions I get asked most, answered without the fluff:
- What exactly does PPG make?
- What is PPG antifoam and when do you actually need it?
- How do I find a qualified PPG coating applicator near me?
- Is powder coating the right choice for my parts?
- Does self-healing automotive coating really work?
- What solvent should I use for my parts washer?
What exactly does PPG make?
You'd think this one's obvious, but it isn't. PPG is best known for paints—they're one of the largest coatings manufacturers in the world—but the product portfolio goes far beyond that. They make industrial coatings, automotive refinish products, powder coatings, sealants, adhesives, and specialty chemicals like antifoam agents and glycols.
The thing people get backwards: they assume PPG is just "a paint company." That's like calling a hardware store "a hammer shop." When I'm reviewing specifications, the breadth of the portfolio matters because it means consistent quality standards across product lines. If I specify a PPG primer and a PPG topcoat for the same assembly, I'm dealing with one set of quality expectations—not three vendors' different interpretations of "good enough."
Does that mean every PPG product is right for every job? Absolutely not. But their technical documentation tends to be thorough, which matters more than you'd think when you're auditing compliance against a spec.
What is PPG antifoam and when do you actually need it?
Foam in industrial processes isn't just annoying—it's expensive. It reduces production capacity, causes measurement errors, and can damage equipment. PPG antifoam is a specialty chemical designed to break down or prevent foam in processes like paint manufacturing, wastewater treatment, and metalworking fluid systems.
Here's the misconception: people treat antifoam as a one-size-fits-all additive. It isn't. The right product and dosage depend on your specific chemistry. I once saw a facility add a generic defoamer to a coating line to save money—the interaction with their resin system created surface defects worse than the original foam problem. They ended up spending more on rework than they saved on the cheap defoamer. Classic penny-wise, pound-foolish.
The fix is straightforward: PPG publishes detailed technical data sheets with dosage recommendations for each antifoam product. Follow them. If your process is unusual, request a sample and test it before committing to a full drum. That testing costs a day, maybe two. Rework costs weeks.
How do I find a qualified PPG coating applicator near me?
If you're asking this, you're probably sourcing an applicator for a commercial or industrial job, not painting a bookshelf. The stakes are higher than most people realize. An unqualified applicator can apply the wrong film thickness, skip surface preparation, or use incompatible thinners. I've rejected entire batches because an applicator decided the primer was "optional."
Here's what you need to know: PPG maintains a network of authorized applicators, and you can search for them through PPG's website. But "authorized" doesn't mean "perfect"—it means they've been trained and have access to PPG's technical support. When I audit an applicator, I still ask for documentation: application records, batch numbers, cure schedules. An applicator who can't produce those is a red flag, regardless of whose logo is on their truck.
Don't underestimate proximity. A local applicator can visit your site, check the conditions, and troubleshoot face-to-face. I've paid a premium for a local certified applicator and had them on-site within 24 hours when a rush job needed adjustment. In that moment, the cheaper out-of-state quote didn't matter—the certainty of a fast response was worth every dollar of the premium.
Is powder coating the right choice for my parts?
So you've searched for "power powder coating" (everyone spells it that way, we know) and you're weighing your options. Powder coating is a dry finishing process: electrostatically charged powder is sprayed onto a grounded part, then cured in an oven. The result is a tough, uniform finish that typically outperforms liquid paint in durability.
The causation question most people get wrong: they assume powder coating costs more because it's inherently "premium." Actually, for medium-to-high volumes, powder coating is often cheaper per part than liquid coating. Overspray can be recycled, cure times are shorter, and there's less hazardous waste to manage. The premium disappears at scale.
But powder coating isn't always the answer. It's a poor fit for low-volume prototypes (setup costs are high), heat-sensitive substrates, or parts requiring very precise, thin coating thicknesses. In my experience reviewing specs, the people who regret powder coating are the ones who chose it for a single prototype or a small batch. Run the numbers on your actual volume before you commit.
Does self-healing automotive coating really work?
I'll be straight with you: self-healing coatings are neither magic nor a gimmick. These are clear coats with a polymer structure that "reflows" when exposed to heat—from sunlight or an external heat source—allowing fine scratches and swirl marks to disappear.
What you need to know:
- They work on light surface scratches—think car wash swirls—not deep scratches or gouges.
- The healing rate depends on temperature and time. A hot day gradually reduces fine scratches; a heat lamp accelerates the process.
- They're not scratch-proof. They're scratch-tolerant and self-repairing to a degree.
In my line of work, I've seen spec writers expect self-healing coatings to eliminate paint maintenance entirely. That's a misunderstanding. What these coatings actually do is reduce visible wear and extend the aesthetic life of the finish—which can save real money on detailing and polishing over the life of a fleet vehicle. I think that's worth the premium for high-end or high-visibility applications. For a utility trailer? Probably not.
The price difference is meaningful—typically 20-40% more than standard clear coat (based on supplier quotes I've reviewed recently; verify current pricing). But if appearance degradation is a measurable cost in your operation, the math often works out.
What solvent should I use for my parts washer?
Parts washers are one of those things nobody thinks about until parts start coming out streaky. The solvent choice matters more than people give it credit for.
There are three main categories:
- Aqueous cleaners—water-based with detergents. Good for general shop use, lower fire risk, easier on the environment.
- Petroleum solvents—mineral spirits and similar. The traditional choice, effective on grease and oil, but flammable.
- Specialty solvents—formulated for specific residues or compatibility requirements.
The wrong question is "what's the strongest solvent?" The right question is "what's the right solvent for the contaminants I'm removing?" I've seen a shop destroy plastic components by using an aggressive solvent that was technically stronger than the specified one. Material compatibility mattered more than cleaning power. That's the kind of mistake that doesn't show up on the invoice until you're buying replacement parts.
If you're using a PPG coating or chemical product, the technical data sheet will often indicate compatible cleaning solvents. And check your parts washer manufacturer's recommendations too—a solvent that attacks gaskets or seals can cause leaks and unplanned downtime. Both sources are worth a few minutes of your time before you fill the tank.
And if a deadline is looming and you're tempted to grab whatever solvent is on the shelf—don't. The certainty of using the specified product, even if it means waiting a day for delivery, beats the risk of contaminating your whole batch. I've seen that gamble fail too many times.