Is POR15 the best rust prevention paint?

[Dr.Doofenshmirtz]

As per the title really...
Anyone ever used POR15 rust prevention paint? Is it good, or is my ~£20 per tin better spent on an alternative product?

[Spitfire2]

Dr.Doofenshmirtz said:

As per the title really...
Anyone ever used POR15 rust prevention paint? Is it good, or is my ~£20 per tin better spent on an alternative product?

Its very good - small tin goes amazingly far.

Be sure to have gloves (preferably taped to your overalls) to avoid getting it on your skin. As it says on the top of the tin, once its dried onto your skin only time will take it off (a couple of days typically).

[LRdriver II]

What you need, pour it into a separate container and use a piece of plastic bag as a seal between the tin and lid ( otherwise it fuses the two together NEVER to come apart again.. but for some reason it does not react/stick to plastic)

[ch427]

its good stuff, i painted a chassis part a while back and wasnt quite happy with the finish. I had to almost grind it off when it had hardened.

[Hitler Hadrump]

I've used quite a bit of it, it's really hard wearing. I'd recommend it.

Don't get it on your skin. Put on the gloves BEFORE opening the tin!

[Wing Commander]

Am using it at the moment on various bits of my XR2 restoration

found here

Have currently used it only on one piece, the gearbox cradle.

A few things I have noticed:

• What they say about it not coming off the skin is true - ask me how I know...
• Once it's dried onto the component, it is just as tough
• It won't stick very well to clean metal. It much prefers rusty crap.
• It is very transparent. I can see through a couple of coats of it to see the nice metal that I have tried to paint over
• It goes a long way

[Dr.Doofenshmirtz]

Wing Commander said:

Am using it at the moment on various bits of my XR2 restoration

found here

Have currently used it only on one piece, the gearbox cradle.

A few things I have noticed:

• What they say about it not coming off the skin is true - ask me how I know...
• Once it's dried onto the component, it is just as tough
• It won't stick very well to clean metal. It much prefers rusty crap.
• It is very transparent. I can see through a couple of coats of it to see the nice metal that I have tried to paint over
• It goes a long way

Shesh - that's quite a restoration project! nice one.
Nice use of electrolysis too - I've been singing its praises for years. The results are amazing. You should try doing the whole car...got access to a swimming pool?

Thanks to all for the input - I take it Frosts is the cheapest place to get it unless anyone knows differently?

Edited by Dr.Doofenshmirtz on Monday 17th May 16:10

[julian64]

It does have one big problem that is advertised on the tin. It is not very stable to UV.

In other words not good for anything exposed to the sun for too long. I found this on a piece of an upright previously painted that gets to see the sun on a regular basis. Eventually after about a year it starts to become brittle and chips very easily.

I woudl suggest overcoating if thats an issue for you.

[Gad-Westy]

Hitler Hadrump said:

I've used quite a bit of it, it's really hard wearing. I'd recommend it.

Don't get it on your skin. Put on the gloves BEFORE opening the tin!

And wear a balaclava whilst using it. You might look like a tit but far less than if you have a big splodge of black paint on your face for days after. Not that I speak from bitter experience you understand...

Edited by Gad-Westy on Monday 17th May 16:25

[5harp3y]

julian64 said:

It does have one big problem that is advertised on the tin. It is not very stable to UV.

In other words not good for anything exposed to the sun for too long. I found this on a piece of an upright previously painted that gets to see the sun on a regular basis. Eventually after about a year it starts to become brittle and chips very easily.

I woudl suggest overcoating if thats an issue for you.

I thought you painted over it with their chassis paint etc after to help with this?

[steveo3002]

ive found its very good and hard as nails , but only if the prep is done to thier specs

if you lash it over dirty /bad preped parts it peels off in sheets

[ukzz4iroc]

Great work Wing Commander! An inspiration to us all!

So POR 15 sounds like it does the business. Going to be using myself very soon. Why dont we just paint the outsides of our cars with the stuff and they will never rust

[Wing Commander]

julian64 said:

It does have one big problem that is advertised on the tin. It is not very stable to UV.

In other words not good for anything exposed to the sun for too long. I found this on a piece of an upright previously painted that gets to see the sun on a regular basis. Eventually after about a year it starts to become brittle and chips very easily.

I woudl suggest overcoating if thats an issue for you.

The tin that I have says that it *is* stable to UV, well I am 90% sure it says that. Will check later/tomorrow to see. I remember seeing it and thinking that it was odd because of the prior warning about UV exposure.

[Wing Commander]

Dr.Doofenshmirtz said:

Wing Commander said:

Am using it at the moment on various bits of my XR2 restoration

found here

Have currently used it only on one piece, the gearbox cradle.

A few things I have noticed:

• What they say about it not coming off the skin is true - ask me how I know...
• Once it's dried onto the component, it is just as tough
• It won't stick very well to clean metal. It much prefers rusty crap.
• It is very transparent. I can see through a couple of coats of it to see the nice metal that I have tried to paint over
• It goes a long way

Shesh - that's quite a restoration project! nice one.
Nice use of electrolysis too - I've been singing its praises for years. The results are amazing. You should try doing the whole car...got access to a swimming pool?

Thanks to all for the input - I take it Frosts is the cheapest place to get it unless anyone knows differently?

Edited by Dr.Doofenshmirtz on Monday 17th May 16:10

I think it was you actually that gave me the idea of the electrolysis, from another restoration thread on here!

I don't think the family would be too happy if I were to empty a metric ton of soda crystals into the pool, shortly followed by me ploughing the XR2 in head first!

[Wing Commander]

ukzz4iroc said:

Great work Wing Commander! An inspiration to us all!

Thanks! It's coming along nicely, albeit slower and in more depth than originally anticipated.

[Hitler Hadrump]

IIRC UV doesn't hurt it, it just discolours and turns grey.

[mudster]

POR 15 is more than just one product. The rust prevention paint is UV sensitive and needs to be overcoated with POR 15 chassis black if UV is going to be a problem. :-)

[mohitos]

Sorry to resurrect such an old thread. I wondered if POR15 would be the best thing for the following:

Cleaning my wife's car today I noticed something has landed on the roof with some force, created a little dimple and breaking through the paint. The exposed metal has now started to rust. I don't want to attack the roof back to bare metal, but before I touch the exposed area up, should I apply a little POR15 to the rusted spot as a (slightly) preventative measure ? Or would something else do the job better ?