Rust Kill Paint

Forums › Home Workshop DIY › Rust Kill Paint

tdgeek

30086 posts

Uber Geek
+1 received by user: 9523

Trusted

Lifetime subscriber

#311159 19-Dec-2023 14:36

The galv trailer has rust on the floor, due to me leaving damp compost on it for too long

Ive googled Rust kill and see most at Bunnings/M10 are more of a rust protection than killing although there are some rust converters

Any recommendations? In most places its 100% surface rust covered, do I need to sand it? If so I guess I can get an attachment for the cordless drill?

End of the day do the so called rust killers actually convert rust to a neutral ferrous solution as claimed?

TIA

Gurezaemon

~HONYAKKER!~
1433 posts

Uber Geek
+1 received by user: 1609

ID Verified

Lifetime subscriber

#3173473 19-Dec-2023 16:30

My suggestion would be:

-Wire brush on a drill to get rid of any rust that is loose. Use eye protection. Trust me on this.

-Rust converter applied liberally to any rust sections.

-Killrust primer.

-A couple of layers of some sort of hard-wearing paint.

Get your business seen overseas - Nexus Translations

Eva888

2865 posts

Uber Geek
+1 received by user: 2524

Lifetime subscriber

#3173502 19-Dec-2023 17:47

We just did this today on some rusted steel chair arms. Surface rust is easy. Sanded the rust by hand. Cleaned it. Then painted with rust convertor. When dry, sprayed with a can of spray grey primer from Bunnings. It came out a nice satin finish so two coats of that will be sufficient. Looks great.

SATTV

1671 posts

Uber Geek
+1 received by user: 659

ID Verified

#3173508 19-Dec-2023 18:42

I used three of these when I did my trailer last year.

https://www.bunnings.co.nz/3m-scotchbrite-paint-rust-stripper-abrasive-disc_p0141598?store=9510&gad_source=1&gclid=CjwKCAiA-P-rBhBEEiwAQEXhH3QZ2CRt3vc94D0iPIifpIDowrHDE8hTu13MMcvCEnVG-ZA0e76uARoCM6kQAvD_BwE&gclsrc=aw.ds

I took it back to bare metal all over ( was painted )

Then used rust kill to get any bits I missed.

https://www.supercheapauto.co.nz/p/crc-crc-rust-converter-aerosol-425g/364560.html

Then painted ( brush )

https://www.supercheapauto.co.nz/p/sca-sca-acrylic-paint-black---1-litre/551602.html

Came up really well.

Sadly I could not keep it and had to sell it, what started as patching a hole in the plywood deck turned into a full reno.

John

I know enough to be dangerous

Lias

5673 posts

Uber Geek
+1 received by user: 3990

ID Verified

Trusted

Lifetime subscriber

#3173519 19-Dec-2023 20:33

I have exactly this problem although not to the same degree you.. I've applied CRC rust converter to the rusty spots and will prime/paint when I get motivated.

I'm a geek, a gamer, a dad, a Quic user, and an IT Professional. I have a full rack home lab, size 15 feet, an epic beard and Asperger's. I'm a bit of a Cypherpunk, who believes information wants to be free and the Net interprets censorship as damage and routes around it. If you use my Quic signup you can also use the code R570394EKGIZ8 for free setup. Opinions are my own and not the views of my employer.

michelangelonz

125 posts

Master Geek
+1 received by user: 40

#3173520 19-Dec-2023 20:47

Try Black Guard.

tdgeek

30086 posts

Uber Geek
+1 received by user: 9523

Trusted

Lifetime subscriber

#3173545 20-Dec-2023 07:07

Thanks for the advice. The trailer guy called me back, they:

ScotchBrite sander to take off loose rust
CRC Rust Converter, they swear by it
Any zinc paint

So a good consensus here. My issue was very few neutralised the rust. Ill get onto this in the holiday break

Apple TV

Stream your favourite shows now on Apple TV (affiliate link).

mdf

mdf
3569 posts

Uber Geek
+1 received by user: 1527

Trusted

Lifetime subscriber

#3173635 20-Dec-2023 11:43

One more vote for CRC rust converter. Fantastic stuff. However, I prefer the paint on bottle rather than the spray can - the spray can always seems to clog up for me, no matter what I do (and I use quite a lot of spray cans and the turn upside down and spray until clear trick works great for everything else, just not CRC rust converter). Tipping a bit out and apply liberally with a cheap brush is just as quick. YMMV.

Your method sounds good. If you've got an angle grinder, I am quite the fan of the brumby strip discs for getting rid of rust. Then your choice of top coating system. CRC also has a Zinc spray. I've just been to check the spray cans and have quite a lot (and good experience) with the Zinc It range which I get from Bunnings. The CRC rust converter will act as a primer on bare steel and rust.

If you were doing the whole trailer, you could go for a two pack epoxy but if you're just touching up existing galvanised steel, rattle cans is probably all you need.

angski

61 posts

Master Geek
+1 received by user: 9

#3173640 20-Dec-2023 12:11

I had similar problem, but it was for my old switchboard panel at the back of my house.
I even rang up CRC for advice.

Here is what i did.

a. I basically clean out as much rust as i could.

b. at least two or three coats of the CRC rust convertor.

c. I painted Dulux metalshield epoxy top coat on it. two coats (I think)

That was like two years ago. Till today, not a single dot of rust.

On another note, I tried this but failed
a. clean the nail rust on the weatherboard to clear

b. applied CRC rust convertor twice

c. three coats of resene paint.

Rust appear after six months.