spray paint over POR15 for topcoat OK?
 

Thanks everyone for all the help I've been getting lately. I'm getting ready to POR15 my frame, trailing arm and rear-end. I know the por15 is not UV safe and I know it wont see that much UV on the frame ect… But was thinking about just using some Rust-oleum spray paint for a topcoat over the POR15. Will this work? Or would it be better to use this oil base brush on Rust-oleum paint? I'm gonna be brushing on everything on.

Re: spray paint over POR15 for topcoat OK?
 

pics

Re: spray paint over POR15 for topcoat OK?
 

I am not a paint guy but initially would think an oil base would be better, sprayed on of course.

I have used that Professional rattle can stuff on a rear bumper over SEM self etching primer and it has held up for a good 10 years. I of course scratched the crud out of my bumper.

Re: spray paint over POR15 for topcoat OK?
 

I heard por 15 now making a UV safe product now.
Not sure 100 but worth looking in to.
My frame is regular por 15. Couple years in still looks fantastic.
RRM

Re: spray paint over POR15 for topcoat OK?
 

I cannot definitely answer you question of spraying over por 15. However, if you find out it is ok then don't use Rustoleum. I had used rustoleum for years on semi frames and it fades and is a short life product. For a few dollars more use Valspar metal enamel. It holds color much better, last longer and covers exceptionally well. It's rustoleum on steroids.

Re: spray paint over POR15 for topcoat OK?
 

It is my understanding that if you let the POR-15 dry completely, a topcoat will not adhere very well (unless you sand/scuff it to give it a tooth, or use a special primer). When I painted my frame I let the POR-15 dry to a very slight tackiness (the instructions called it a 'slight finger drag'), then used POR Chassis Coat Black in spots where I wanted a topcoat. In any case, I'd definitely give them a call and ask, it's too much work to have to do it over again if something doesn't adhere well.

Jon

Re: spray paint over POR15 for topcoat OK?
 

well that took longer then i thought. got the first coat of por15 on, not gonna do the second coat till the morning, i know i should do the second coat while its still tacky, but im to tired at this point and wont be able to see the second coat go on at this point.

Re: spray paint over POR15 for topcoat OK?
 

pic

Re: spray paint over POR15 for topcoat OK?
 

I brushed it on my Jeep frame with the cheap brushes then used their overcoat UV 15 yrs ago still holding up. Cant see brush marks
Ron

Re: spray paint over POR15 for topcoat OK?
 

You probably only need one coat. But if you want another coat, this is from the instructions: "If the second coat is applied too late it will not adhere because of the slick surface and will peel."
Tomorrow you can use TIE-COAT PRIMER or ETCHING PRIMER that they sell at POR15, or sand/scuff as jonmc56 mentions. Then put another coat of POR15 if you really want it, or just put a primer and/or topcoat on of your favorite paint. I have had success with misting the POR15 with Rust-oleum spray can primer while the POR15 is still tacky, and then you don't have to do anything special.
I think for a frame, if it were mine, I would consider it 100% done if you leave it tonight and not do anything more with it.
http://por15bc.com/por-15.htm

Re: spray paint over POR15 for topcoat OK?
 

I just brushed mine on 2 weeks ago. 1 Coat, no top coat. I don't plan on having the wheels facing up so not concerned about UV. I did my Chevelle in 2002 the same way and it looked great still in 2014 when I sold it.



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