Raptor Issue

wocparc · Mar 13, 2024

My long suffering son and I repainted my GQ ute with raptor in 2022.
The roof had some rust in it so we gave it a coat of rust converter prior to Raptoring.
About 6 months later (after Cape York and a couple of other trips) I was up on the tray doing a good scrub attempting to eliminate the red tinge I noticed the paint had cracked. When I started prodding (as you do) the paint just broke of in large pieces which covered almost the entire roof. The Raptor had not adhered to the rust convertor.
About September last year we tried the Brunnox at the suggestion of the Raptor people. Vehicle was unused until February this year. Got up to look at the roof and blow me down, the same issue has occurred. Paint has not adhered.
So damned disappointed, and so damned sick of not having this project done and dusted. Have to try and get the paint matched AGAIN and now trying to decide whether to get it done down Goulburn where all the tools etc are but it always rains or in Dubbo where in never rains but have to transport the tools and find a week free in the son's busy schedule.
We are just going the standard Raptor prep this time as that worked on the rest of the vehicle.
Just though I'd put our drama on here for info.

Dazz09 · Mar 13, 2024

I was looking forward to having a whinge about raptor coat as I just dont like it lol.

But looking at the pics its not a raptor issue. That rust needs to be taken off and/or treated properly.

wocparc · Mar 13, 2024

Dazz09 said:
I was looking forward to having a whinge about raptor coat as I just dont like it lol.

But looking at the pics its ot not a raptor issue. That rust needs to be taken off and/or treated properly.

That's not rust, it's the Brunnox. That's the colour it dries. There actually isn't any active rust on the roof now (after 2 lots of rust converter / prep stuff.

geeyoutoo · Mar 13, 2024

Wow! That is bad.

Benny Jahmin · Mar 14, 2024

That's a shame. I've got a couple of cans of brunox I was going to use for a couple of spots too. I have used it on the camper and so far so good but it's only been a couple of months.

Did you sand the brunox before putting down the raptor? It comes up pretty glossy, even though it says you can top coat it with pretty much any automotive product it doesn't say to sand it, however after using it for a small rust repair on my van I would think you would need something sanding for a 2k epoxy topcoat to key into.

Ryland · Mar 18, 2024

After using the brunox or rust converter, you need to wash it down with soapy water. Once dry, give it a light sand to give it a key and then wipe over with wax and grease remover. Rust converters and similar leave phosphoric acid or similar on the surface which disrupts the key of any 2k product.

Ryland · Mar 18, 2024

Rust converters and similar do work but have little penetration into rust. Where possible, the best method is to remove as much rust as possible before using a rust converter

Slo4x4 · Mar 21, 2024

I use a lot the rust converter from Wurth. It says that it needs to be repainted in 48 hours and not sooner than 3 hours. If you leave it longer, lightly sand it with a scotch brite scouring pad (or something simmilar), wipe it off with grease remover and then use an epoxy primer and only then Raptor paint. I've never had a problem with paint peeling after this process.

Constantin · Mar 22, 2024

best way to get rid of that is to wire brush all the rust before applying brunox. Rust converters don't do magic, they just close the tiny micrometric rust spots that a wire brush cannot eliminate. That is a lot of rust underneath. metal is still rusting underneath, that's why the paint goes off

Raptor Issue

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