Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

Use on galvanized pipe?

Accepted Answer

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

ASIN	B000PIKJAS
ASIN	B000PIKJAS
Age Range Description	Adult
Best Sellers Rank	#20,680 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #165 in Spray Paint
Brand Name	Rust-Oleum
Color	Flat Rusty Metal Primer
Color Code	Red
Container Type	Can
Coverage	12 sq ft
Customer Reviews	4.7 4.7 out of 5 stars (1,855)
Customer reviews	4.7 4.7 out of 5 stars (1,855)
Date First Available	10 August 2012
Dry Time In Hours	0.25
Finish Type	Satin
Global Trade Identification Number	00020066776985
Included Components	1
Indoor Outdoor Usage	Indoor
Is Discontinued By Manufacturer	No
Is Waterproof	True
Item Form	Oil
Item Volume	12 Fluid Ounces
Item Weight	363 g
Item model number	7769830
Manufacturer	Rust-Oleum
Manufacturer	Rust-Oleum
Model Name	Stops Rust Rusty Metal Primer
Model Number	7769830
Paint Type	Oil
Part Number	7769830
Product Dimensions	20.96 x 14.61 x 20.96 cm; 362.87 g
Size	12 Ounce (Pack of 1)
Special Features	Rust Resistant
Specific Uses For Product	Interior
Surface Recommendation	Metal
UPC	020066776985
Unit Count	12 Grams
Water Resistance Level	Waterproof

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

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