What if surface is part rusted, rest painted? With spray can there will be some overspray. Will primer stick to enamel?

Surface rust--It depends on how deep the rust is. If really rusted I would use a wire sanding wheel attach to a drill and grind as must rust away as possible (wear goggles to protect eyes)and then sand... If just surface rust I would use fine grade sand paper to treat area. Clean area as best as you can and spray a few coat of red/black (your color choice of primer) primer on area and let dry. Yea, there will be some overspray but sometimes that can not be helped..... Primer stick to enamel. Yes. It depends on what type of paint is on item you want to spray. I would say yes that primer will stick to enamel. I don't know if companies still made enamel primer, some do and some don't. Read the label on the can. I would sand the area were you want to prime with a fine sandpaper to remove the shine from the enamel paint. Clean area and try a test area to see what happens.............Good luck. JMJ

Will this work on tin? I have a shed with a tin roof and I'd like to preserve it since it's rusting.

Well, I dont want to get your hope up but you can but how long is stays there is another question If the tin is really rusted and in sad shape I suggest you replace it but slightly rusted you may sand it lightly and apply 1 light coats of primer and let it dry completely and then give is a second coat...…..It may last a while but wont last for ever...……..The panel may be rusting from within itself and paint may cure the problem but it may still rust as time goes on.,..... JMJ

Can I use this on wrought iron outdoor table and chairs?

I have used it as a primer for wrought iron, followed by a color coat. Remove loose rust as much as possible.

Use on galvanized pipe?

No, this will not work on galvanized pipe, there is a special primer for that.

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🛠️ Stop Rust in Its Tracks—Prime Like a Pro!

RAPID READY TO TOPCOAT - Apply your finishing coat in minutes—no more waiting around to complete your project.
UNMATCHED SURFACE GRIP - Experience superior adhesion that locks in protection and prevents peeling or flaking.
DOUBLE THE RUST DEFENSE - Protect your metal surfaces with twice the rust-blocking power for long-lasting durability.
LIGHTWEIGHT EASY TO HANDLE - Compact 12-ounce spray can designed for effortless application on interior metal surfaces.
SATIN FINISH FOR A SLEEK LOOK - Get a professional, flat rusty metal primer finish that’s smooth and ready for any topcoat.

Rust-Oleum 7769830 Stops Rust Spray Paint is a 12-ounce flat rusty metal primer designed for interior use. It offers twice the rust protection with superior adhesion and a satin finish, allowing topcoats to be applied within minutes. Lightweight and easy to use, it ensures durable, professional-grade rust resistance on heavily rusted metal surfaces.

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Manufacturer	Rust-Oleum
Part Number	7769830
Product Dimensions	20.96 x 14.61 x 20.96 cm; 362.87 g
Item model number	7769830
Size	2.13 l (Pack of 1)
Colour	Flat Rusty Metal Primer
Finish	Satin
Item Package Quantity	1
Special Features	Rust Resistant
Usage	Interior
Batteries included?	No
Batteries Required?	No
Item Weight	363 g

Rust-Oleum 7769830 Stops Rust Spray Paint, 12-Ounce, Flat Rusty Metal Primer

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