Por-15

[russcc]

Is POR 15 an enamel ? I ask because I was curious as to what to thin it with.
Xylene for example is an enamel reducer.

[paul2748]

Doesn't the can say what to thin with? I seem to remember that it did. I thnk PORhas a tech line, maybe call them?

[petehoovie]

POR-15 FAQ'S - Stop Rust with POR-15

https://www.por15.com/POR-15-FAQS_ep_61.html

You should use only POR-15 Solvent for thinning. Keep lacquer thinner handy for clean-up. Do not thin POR-15 more than 5%. CAN I PAINT OVER POR-15 WITH OTHER PAINTS? Absolutely. POR-15 will accept all paints, including lacquer-based paints. POR-15 Tie-Coat Primer is the best prime coat to use before topcoating POR-15.

[CA Victoria]

Have used a couple of gallons so far.
Sprays well right out of the can. Never needed to reduce it.
I use medium reducer for clean up.
Follow the instructions, pressure will vary the gloss.
Very nice paint.

Solubility: POR-15 is readily soluble in esters. ketones, and aromatic solvents.
info listed here:
https://www.por15.com/POR-15-Technic...ion_ep_62.html

[tubman]

I spent the winter of 1987-1988 under my '51 coupe with a sandblaster (after I had taken all of the removable parts off). I then painted it with POR-15 (unthinned). The last time I looked (it's hard to get down there these days) it still looked great. They do have their own thinner and topcoat. I would consider using the whole system.

[fordor41]

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probably could get the same results with $20 worth of Rustoleum!

[russcc]

As an alternative to POR-15 I have used SEM Rust Shield with their catalyst. Very durable under the car.

[flatheadmurre]

POR-15 works real well if you just follow their instructions...attaches nicely to rusty surfaces and seals up well.
What i found out the hard way is that it really don´t like cleaning with solvents...you clean the surface with white spirit or solvent degreaser it doesn´t stick as it should.
Waterbased degreaser and acid etch and result is usually real good.

[tubman]

Originally Posted by fordor41

probably could get the same results with $20 worth of Rustoleum!

I will posit that you have never used POR-15.

[32phil]

POR 15 works very well when used as directed.
It does not like long term exposure to sunlight
I believe a UV protected version is available.
Make sure you do the research before you apply the product

[TJ]

Be sure to wear a real good mask if you spray it. If brushed on have plenty of ventilation. It's good stuff, but be safe.

[cas3]

i just did the inside of my doors with por15, never used it before. it really dries hard, like plastic. so hard in fact that if you have some leftover in the can you can barely get the lid off. when ever i open a new can of paint i poke 4 holes with a nail around the rim so any thing you spill can run down into the can instead of pooling up in the trough where the lid seals. with por15, any residue left in that trough will make it nearly impossible to get the lid off next time you want to open it. i used a quart in about 4 different times over a month, and by the end the can looked like it had been hit by a truck because it took so much violence to get it open. so, next time i use any i will actually clean the top of the can before reinstalling the lid

[philipswanson]

Great stuff. Better not to thin it. Just brush it on right out of the can. Brush marks disappear. Dries smooth. You don't want to spray it without a respirator.

[Cecil/WV]

Originally Posted by cas3

i just did the inside of my doors with por15, never used it before. it really dries hard, like plastic. so hard in fact that if you have some leftover in the can you can barely get the lid off. when ever i open a new can of paint i poke 4 holes with a nail around the rim so any thing you spill can run down into the can instead of pooling up in the trough where the lid seals. with por15, any residue left in that trough will make it nearly impossible to get the lid off next time you want to open it. i used a quart in about 4 different times over a month, and by the end the can looked like it had been hit by a truck because it took so much violence to get it open. so, next time i use any i will actually clean the top of the can before reinstalling the lid

Just lay a piece of plastic between the lid and the can.

[deuce_roadster]

I put a sheet metal screw with a rubber washer (like what you use for a metal roof) in the lid and never take the lid off, just remove the screw pour into a throw away container and replace the screw. That way you don't expose the can to the moisture in the air which is what makes it set up. The local Por-15 distributor told me this tip. Said people in dry regioins have it take much longer to set up even though it is warmer. Also, If you get it on your skin it has to wear off so try real hard to keep it off you.
It seems pretty thin to me, I don't know why you would want to thin it.

[russcc]

2 good tips on preserving POR 15 in the can. I use Saran wrap over the top of the can before I put the lid on. The sheet metal roofing screw with washer is great idea.

[fordor41]

Originally Posted by tubman

I will posit that you have never used POR-15.

Actually I have used Por-15. It is good paint but cost like hell. I painted the floor and running gear on our '41 Ford in 1995 or so, with Rustoleum, and sold it in '18 and paint was like new. No chips, no rust and we put almost 200K miles on it and that was 100 deg. weather, rain and snow.

[Tinker]

If you get it on your hands, just like India ink your cells will have to shed before it's gone. So wear gloves.


Only thing I can say after using it. If your desired area has any amount of oil on it, it will peal right off. If you can't sand blast an area and it's clean from gas/oil it works well keeping oxygen off away (just my opinion). Certainly blasting is a good surface to start with.



Prep like any surface paint. Before and after for top coat if you do. Not sure about por15s respray window, but sanding will give some tooth to it, like any epoxy primer if you miss the respray window.



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