POR 15 or any rust prevention pros and cons???

I am building the floor in my model A and I would like to put a coating on it when its done. I want to know experiences good or bad with the products out there. What ever it is Por 15, KBS Coatings, Lizard Skin, or anything. Was it worth the price, did it do the job, did you have to buy more then you thought? Thanks

 

i used some eastwood stuff on mine. i think it's all the same but it would probably lay out nicer with a cheap spray gun than a brush. i think the stuff from eastwood is much cheaper, it's just a rubberized coating.

 

Everything Eastwood we have used over the past 20 years has worked great....no complaints

 

POR 15 is'nt actually paint,it's a urethane and drys in the presence of moisture in the air .A humid day is the best time to use it..If you follow the instructions as closely as possible,you will find it can be brushed on .It will leave a gl***y finish which hardens so hard you can't scratch it.
But if you want actual rust protection Dinitrol is the only way to go.A swedish product it p***es all the tests,just doesn't look as good as eastwoods or POR's products.

 

thanks

 

I've used POR15 many times with excellent results. It's really durable, I've used it on soft floors, it will fill small pinholes too.

 

i've heard that the por15 can be brushed over rusty metal without adverse effect. is this true?
can it be applied over painted surfaces without peeling, or does metal need to be bare?

 

Observations.........
Metal needs to be fully prepped for POR15, but can and should remain somewhat rusty. POR has wicking properties unlike normal paint, that's part of how it seals rust, and why it's near impossible to remove from your skin.

You can paint POR15 over other paints, but need to sand the surface so it can bite in, or it will peel. And that area is not receiving the full benefit of the POR.

Humid days are not the best time to apply POR. You want a dry, hot day if possible. It allows the paint to flow out fully before drying, eliminating brush marks, and wicks into to the substrate the maximum amount. It'll be 80% cured in a month, more like a year for maximum hardness.

You will read about people with bad results. They skimped on prep. You must clean, and reclean, and sand, and reclean, and sand some more, and reclean, and then dry with a fan because moisture is the enemy. Point of reference, after doing a few cars, the average is around 30-40 hours on a complete undercar prep and brush paint. Think the guys with complaints spend more like 3-4 hours. You should see the underside of my OT winter beater, it was fully involved with surface rust before POR. 4 winters later still looks fabulous, rust is at a standstill.
Good luck!

 

I did all possible surfaces like inside floor, trunk, under car, inside quarters, rockers, anywhere the sun won't hit with por-15. DO NOT spray without a full resperator as that **** is lethal airborn.I used 2 applications with foam brushes and then top coated with gloss black. I'ts been on there 1 year and so far it's fine. Wire brush the loose rust and dirt, make sure it's dry and have at it. The rustier the metal the better it seems to work.I could actually see it bubbling on the rust. A little goes a long way on a brush.I bought a gal. and did the whole 55 chev. and used about half of it.

 

different thread, same idea http://www.jalopyjournal.com/forum/showthread.php?t=186186

 

A clean rust surface worked for me, a loose flakey surface didn't. This was on a floor. I painted a old rusty cylinder and left it in the sun. A test of what not to do, it dulled and most stayed on.

I guess prep is everything. Por 15 goes a long way on coverage. Use a mask ! Spraying it is nasty, real nasty. Rubber gloves, a must. The Por 15 will be with you till it wears off. Work smart your lungs will thank you.

 

I did the entire underside of my '51 Ford with POR-15 about 20 years ago. It did everything they said it would, and I have absolutely no complaints. A word of caution, however; I hyped this stuff up to a friend of mine, and he used it to do the plow frame on his snowplow truck. It went to hell in a couple of years. WE found out the hard way that is very susepctible to UV radiation. Where it was fine on the underbody of my car, it failed miserably on the plowtruck frame which was exposed to sunlight. By the way, the POR-15 folks know this and sell a product to put over the original POR-15 to eliminate the UV problems.

 

Thanks for the input.

 

I used some POR-15 for a motorcycle tank (two part kind) and that **** is durable. Got some in the street and it's still there after about 2 years.

 

If I remember correctly POR15 was developed by the French Navy for use on the outer hulls of submarines.Read that in some mag about 10 years ago

 

I put Por 15 inside and under my delivery about 8 years ago and it's held up great. word of caution though, if you don't topcoat it nothing with stick to it worth a ****. everytime it gets hot dynamat falls on my head.

me

 

I Zero Rust anything and everything. You can paint right on top of it to.

http://www.zerorust.com/