Ok looking for people who have experience using POR-15.

Planning on trying it and considering trying the 6 pack of semi-gloss black small cans. Should I buy/use the POR-15 Metal Ready as prep? Or is that a waste of moolah and I should just go straight into using the POR-15?

From reading here, I was under the impression that the POR-15 should be used directly over the rusty parts (removing the loose stuff) but then I see this 'Metal Ready' stuff... is it a waste or do you advise using it first?

Thanks.

Steve

 

I've used it with good results. I did exactly as the manufacturer describes, including use of the Metal Ready, which I believe is some kind of cleaner/etchant that improves adhesion of the POR-15 itself.

Here's some before and after photos when I applied it to the front part of the floor on my '73 Custom Cruiser. There was some rust in the area where you have your feet, which isn't surprising given all the water that can get there from melting snow or just wet feet given nearly 40 years in a northern climate. The rust was not through in any location, but it certainly wasn't anything I wanted to try to sand away. I just wanted to cover it and prevent it from spreading any further. It would be covered by the carpet, anyway.

 

It sticks best to blasted bare clean metal. It sticks well to clean rusty metal, or just rust. It is a paint so if there is any contaminant on the metal it will not stick properly, like oil, dirt, anything besides a bare clean surface.
It does not stick well to painted surfaces. You can put it on there and you think it will stick but it will just peel off later. It is tough, you do not want to get it on any threaded parts. Get it in a bolt hole and you will have to use a tap to remove it before a bolt will thread into it.
Also you have to use a special "tie coat" primer you get from them to paint over POR-15, it will stick to itself but other paint will peel off if the tie primer is not used.
It is NOT resistant to brake fluid. Some of the other brands are but not POR-15. Bill Hirsch Miracle Paint claims to be resistant to brake fluid.

Good Luck,

 

One thing that it won't come off is your skin. Be sure to wear an old long sleeve shirt and gloves. It is a great product. I have used the base coat and then brushed the semi-gloss black (chassis black I believe) over it. Good stuff but not cheap.

 

I had great results with the Marine Clean and Metal Ready before using the POR-15.

https://classicoldsmobile.com/forums...cts-page3.html

 

clean, clean, my floor had remnants of wd 40 in one area instant orange peel mess to fix. incredibly strong paint though

 

You do not need the metal ready prep solution for the POR-15 rust covering paint.
The metal prep is for the high temp clear coat stuff that they sell.
I used Por-15 on my floor pans in and out.I thinned it out and sprayed the fire wall in the engine compartment also.Turned out great.

 

POR-15 is great and expensive. I remember when I did my trunk floor I ran out of POR-15 and instead of going out and get more I had some Rustoleum. Its cheaper and it works just as well.

 

My $0.02 is that the metal prep acts as a conversion coat like ospho on light rust. and improves adhesion. We prepped some scrap steel and applied the por-15 per instructions. we left it outside in the rain for a few weeks. no rust. We then beat the heck out of it with a hammer.. Just ended up scuffing the paint... still no rust after 2 months... I have been blasting most of my parts and then following instructions and had good results. used a foam brush. About 10 days to wear the paint off your hands!

 

Tip, use foam earplugs in bolt holes to prevent the por15 from getting onto the threads then just pull them out with needle nose pliers. I used Duct tape on the studs for my bucket seats.

 

I did my frame with POR 15. Really good stuff. Read the directions and then read them again. 1 drop of sweat in a pint can ruins the whole can. Marine clean cleans the parts of grease and dirt and is a Great product. They recommend the Metal prep for shiny metal surfaces to etch the metal to promote better adhesion. You can top coat with a color coat while the POR is still tacky but once it is dry they recommend a etching primer coat. Go to their website ther is some good info there. I have read a lot of horror stories from people who did not follow instructions.