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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Description

🛠️ Prime like a pro, protect like a boss!

MATTE FINISH BASE - Flat brown primer creates a smooth, professional surface for flawless topcoats
FAST DRY EFFICIENCY - Touch dry in under 30 minutes to keep your projects moving swiftly
BROAD COVERAGE POWER - One 12 oz can covers up to 12 sq ft, maximizing your prep time
ULTIMATE RUST DEFENSE - Oil-based formula locks out corrosion for long-lasting metal protection
VERSATILE INDOOR OUTDOOR USE - Engineered for heavy rust on both interior and exterior metal surfaces

Rust-Oleum 7769830 Stops Rust Rusty Metal Primer Spray is a 12 oz oil-based aerosol designed to prime heavily rusted metal surfaces indoors or outdoors. It dries to a matte finish in 15-30 minutes, covers up to 12 sq ft per can, and provides a durable, rust-resistant base that ensures superior adhesion for topcoats in demanding environments.

Specifications

Brand	Rust-Oleum
Color	Flat Rusty Metal Primer
Finish Type	Matte
Size	12 Ounce (Pack of 1)
Item Volume	12 Fluid Ounces
Special Feature	Rust Resistant
Unit Count	12.0 Ounce
Paint Type	Spray
Specific Uses For Product	Interior/Exterior
Surface Recommendation	Metal
Indoor/Outdoor Usage	Indoor
Item Form	Aerosol
Included Components	1
Model Name	Stops Rust Rusty Metal Primer
Package Information	Bottle
Color Code	Red
Coverage	12 sq ft
UPC	020066776985
Global Trade Identification Number	00020066776985
Manufacturer	Rust-Oleum
Part Number	7769830
Item Weight	12.8 ounces
Product Dimensions	8.25 x 5.75 x 8.25 inches
Item model number	7769830
Is Discontinued By Manufacturer	No
Style	Paint
Finish	Matte
Material	solid
Pattern	Standard Spray
Shape	shape
Item Package Quantity	1
Special Features	Rust Resistant
Batteries Included?	No
Batteries Required?	No
Warranty Description	SATISFACTION GUARANTEED

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