OSPHO penetrates deep inside of the metals pores to convert and protect before Iron Oxide is present. You're right Andy, epoxy offers the most compatability and durability. Half of what I read says yes and half says no. Have been using this for 40+ years for auto restoration. If I was welding it post Ospho treatment, I'd definitely clean (grind clear) the area to be welded. Did you just try to wipe off the tacky residue? Although its not required, if your surface is exposed to the outdoor elements, we highly recommend applying two coats of a quality oil-based paint over Rust Converter. If this were to happen, it would be an epic failure. J. //specify corresponding links below Sanding is crucial in promoting adhesion and getting rid of rust from metal. Now that you have the Water Cooler of your choice, you will not have to worry about providing the invitees with healthy, clean and cool water. Gemplers ECO-Friendly RCQ. The Ortho Phospho will convert red rust to black iron oxide, but it also leaves a protective varnish of some kind. //-->. I haven't heard of this product. It looks cool. Once the vehicle, whatever it is, is media blasted, it won't really take that long to sand it with a DA using 80 grit to prep it for Epoxy. There have been many sailors here that have Ospho treated their keels before barrier coating. random_imglink2() Anybody have any experience on the subject? If you own a car or interact with things that contain metal, such as bikes or wheelbarrows, Rustoleum should be a familiar name. It's great stuff. That is why most people consider painting it over Osphos dull finish. Their website says to let it dry a Depending on your choice, you can also buy our Tata Tea Bags. Being a paintable surface, you can use any automotive paint. Ospho is good stuff. I have been using it full strength. Works fine for ornamental iron, but for steel body panels I Epoxy primers& body fillers DONT LIKE ACID!Nov 30, 2007. We generally rinse it off with water prior to it's drying completely. I'm more concerned about the process. Alternatively, you can leave the Ospho as it is because it will prevent further corrosion. It sounds to me that you did not wipe up the Ospho when it came in contact with the painted areas. We use cookies to ensure that we give you the best experience on our website. Over 200+ free JavaScripts here! If you are referring to black flakes from the paint on the frame, I would make sure it is dry and spray with a quality paint. If you continue to use this site we will assume that you are happy with it. Now that you have figured out that its okay to paint Rustoleum over Ospho, how about vice versa? But its a good idea to let it sit for 24 hours. The Forestry Forum is sponsored in part by: maybe with some white vinegar solution or denatured alcohol. If you want to strip and then leave it bare for a period of time then I'd wipe the ospho on and remove any excess. imagelinks2[1]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" Let dry for a minimum of 24 hours, then apply paint. Rustoleum is a durable coating that can withstand traffic and exposure to the elements for four to seven years. Hi, I have been searching the net for a specific issue I am dealing with. Similar to above. That's why you have to cover it with a barrier coat of some sort (your epoxy or whatever paint system). If you want to improve the look of the rusted metal, you can paint it with some Rustoleum to get a much better finish. To neutralize the Ospho MUST be wet, so if dry, re-wet with itself and let set one or two minutes and with a clean rag and water, wipe off like washing the car and then dry. Privacy Statement - As long as you use a primer, there is no need for sanding over Ospho. imagelinks[1]="http://www.ezboardwalk.com/" My pet car I have stashed is a 73 Dodge Challenger Raylle 340 4-speed. Next, then da car with 80 grit, clean with 700-1 wax and grease remover, let set an hour and coat with an epoxy. Again, apply just enough for full coverage / hiding. When applied to rusted surfaces, OSPHO causes iron oxide (rust) to chemically change to iron phosphate an inert, hard substance that turns the metal black. A dry, powdery, greyish-white surface usually develops when cured. //specify corresponding links below I didn't like the fact that the ospho could not be topcoated or epoxied until 24 hours. I am not sure about all brands--I just used the generic from home depot. Just clean and spray it on. OSPHO is easily effective for exterior and interior work alike. Best Supply MROChem Black Star Rust Converter. Posted: Fri May 30, 2008 5:43 pm Post subject: Re: Paint, Ospho, Primer.. Lance, My dad and I always prime Before applying, use a wire brush or wire wheel to remove loose paint, rust scales, dirt, oil, and anything else accumulated on the Ospho dries overnight. I figured any rust missed by the sandblasting was converted by the ospho. GALVANIZED where appearance is important, apply one coat of OSPHO, let stand for approximately thirty minutes or until metal is etched. Yes, you can paint Rustoleum over Ospho. Do you need to paint over Ospho? You must log in or register to reply here. Either way, the machines that we have rented are not going to fail you. A dry, powdery, grayish-white surface usually develops when cured. However, on its own, Rustoleum is powerful enough to deal with rust and prevent it from occurring in the future. */ \\\"In the end, it is a moral question as to whether man applies what he has learned or not.\\\" - C. Jung. Spray primer and then Rustoleum. I want to get the metal prep that you use like soap and water and wash the bare metal and let air dry, then use a paint thinner to clean it after it dries. can you paint directly VHT SP229 Rust Converter. I am soon to be at that same point with my F1. ,