![]() And that means powder-coating on top of them might just be a good idea. The thing that can help here is the provided rusty metal primer, it does give a good holding.Ĭoming back to POR-15, as electrical conductors, it’s usually poor. And so, when you apply it on vehicles, fading would be sooner. ![]() Rust-Oleum on the other hand is actually a product meant for farm-used equipment. And there can be discoloration seen after a few days. So, for areas that are quite likely to stay under the sun, this may not work really well. The biggest issue that POR 15 gives in terms of performance is UV intolerance. Try proper urethane paint or powder coating. For frames, it’s not really a great choice, however.Īlso, about the POR 15, in case you need to apply it on super clean metal, here’s a tip. ![]() And this will allow the paint to flow out right before any hardening has taken place. Some suggest one should try freezing the Rust-Oleum overnight in a normal fridge. And this is because depending on what surface condition is, the outcomes can be different. And often that’s why people misunderstand it.Īpplying Rust-Oleum is easier compared to that, but sometimes the result you expect does not come out. Nor is there any tooth that would grab the surface. There’s no chemical bond to happen with POR 15. The trick with POR 15 is to make sure you are applying it right or having the rightly prepped surface. And that is one reason, some would refer to it as paint over rust. But it’s not the best with adhesion, quite poor actually. Not even when it was sandblasted.Īnd that makes it clear, POR 15 is fabulous in terms of sheet strength. However, that’s not the case here.īecause if you do so with a metal, then chances are POR 15 won’t even stick properly. Surely people think before application, they need to clean the surface and make it really shiny. Because the product does not react with the rust but grips it. Talking about POR-15, the thing needs to be applied on a rough surface. But keep in mind the real measurements would only come from the fact that how well each applies and performs afterward. Looking at the fact that Rust-Oleum needs just one coat, makes it a bit better than POR 15. Just make sure there’s a 6-hour time in-between both coats or else it can mess up with the first coat and the second one will also sit poorly. There’s no problem with going for the second one. Now if someone wills to use another coat of Rust-Oleum, then they can. However, for the white shades, applying two coats work better. Yes, here only one coat is required for any color that is not white. While with the Rust-Oleum, you can make it work with only one. ![]() ![]() And while the first coat is still tacky, but close to dry, going for the second coat right then works best. The Number of Coats Needed?įor the most general type of application, it’s recommended that one goes for two coat applications with the POR 15. While with Rust-Oleum, it’s going to work wonders than any old air-dry enamel product.įormulation-wise, both are made very well keeping a few targets or goals in mind. The moisture-holding out the power of POR 15 is way better compared to any single part primer. So, whenever you’re using it wearing a respirator is a must. Keep in mind there are also iso-cyonates in POR 15. It prevents any ingredient from causing metal deterioration. The formulation of POR 15 basically is meant to sense the moisture presence and dry quickly. And is free from any toxic element, non-caustic, does not allow corrosion, and is also non-flammable. The zinc phosphate metal etching characteristic is also there. These derive resin, which is used for the formulation.Īnd then if we look into the formula for POR 15, then it’s water-based. There are alkyds, latex, epoxies, and polyurethane instead. So, Rust-Oleum used to have whale oil in their formula before. Let’s start with a RustOleum and POR 15 comparison chart, just give it a read, and then we are good to enter the actual details. 4 POR 15 VS RustOleum – Which One Is Better Overall? Major Comparison Points Of POR 15 Vs RustOleum ![]()
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