Red oxide primer
MK Indy harness fixing point 2
Halfords Chassis black
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
Following on from the earlier thread, (and self-interest currently painting mild steel caravan space frame and wanting to choose the paint).
What are your long term on the road experiences of paint finishes on mild steel chassis and their effectiveness against rust?
It seems to me (after googleing) the following options are:
-Good primer (Zinc phosphate or similar), good quality oil base household gloss.
-Epoxy mastic, Rustbuster EM121 or other "surface tolerant" epoxy mastic such as Jotun 80
-Implement paint, Tractol or simular
-Rustoleum
-UPOL raptor
-Powder coating
Dan
[Edited on 4/9/20 by Bluemoon]
Everyone seems to have a different opinion on chassis covering as there are a lot of treatments available at various costs., I go for clean chassis as much as possible, apply zinc 182, and cover with a chassis sp paint, I tested this on a piece of rusted steel about 2 years ago and left it out in the rain since ( and we get plenty over here!) and it's still the same today, great build and shine, my 2 cents, John
quote:
Originally posted by Jaymaxi
Everyone seems to have a different opinion on chassis covering as there are a lot of treatments available at various costs., I go for clean chassis as much as possible, apply zinc 182, and cover with a chassis sp paint, I tested this on a piece of rusted steel about 2 years ago and left it out in the rain since ( and we get plenty over here!) and it's still the same today, great build and shine, my 2 cents, John
Well it's just a black 'single pack' , quite cheap but I'd like to try a 2 pack colour ( paint and hardener either to match what was there before but try a test the day before in case reaction and to make sure it sets. Messy job if your lying under, get her white suit and long vet's gloves.
Brush painted my MK Indy chassis with red oxide primer then Halfords chassis black. Get the metal abraded and as clean as possible first and avoid
painting in wet conditions (I did mine in a garage). The Halfords chassis black looked a good finish, but could have done with being tougher. The
red oxide however covered really well and cured hard as nails. 3k road miles in good and bad weather and no sign of any issues or rust at all.
Red oxide primer
MK Indy harness fixing point 2
Halfords Chassis black
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
[Edited on 4/9/20 by nick205]
Frost Extreme Chassis paint here.
Sticks like sh*t to a blanket.
Cheers, Pewe 
If my experience with powder coating is any thing to go by don’t bother . Stripped it all of and hand painted it with POR15 followed by Hardnose top coat , it’s been done 12 years with no signs of chipping, rust etc.
I always post this in these threads but nobody listens. I know its expensive but if you want the best solution.....
2 pack epoxy. Try jotamastic 87 undercoat with hardtop Flexi top coat. 15 years submerged in salt water protection. Job done.
https://www.smlmarinepaints.co.uk/primers/jotamastic-range/jotamastic-87
I bought a big tin when I did mine. Only their dedicated thinners or acetone seems to touch it. I just threw the brushes away. Nothing short of a
chisel will scratch it once fully cured. It can be brushed rollered or sprayed.
They paint oil rigs with it.
I always read these threads and powder coating always seems to get bashed. I actually think that powder coating is a great option if you know what your doing and you use the correct stuff. Our experiences must mean there are a lot of cowboys out there.
quote:
Originally posted by Irony
I always post this in these threads but nobody listens. I know its expensive but if you want the best solution.....
2 pack epoxy. Try jotamastic 87 undercoat with hardtop Flexi top coat. 15 years submerged in salt water protection. Job done.
https://www.smlmarinepaints.co.uk/primers/jotamastic-range/jotamastic-87
I bought a big tin when I did mine. Only their dedicated thinners or acetone seems to touch it. I just threw the brushes away. Nothing short of a chisel will scratch it once fully cured. It can be brushed rollered or sprayed.
They paint oil rigs with it.
quote:
Originally posted by Jaymaxi
apply zinc 182, and cover with a chassis sp paint, I tested this on a piece of rusted steel about 2 years ago and left it out in the rain since ( and we get plenty over here!) and it's still the same today, great build and shine
has given a good finish in some places, although the Metal Ready left a rough surface in places which you can
see/feel through the top coats. In other places paint that just peels off, including when a piece of masking tape is taped over and then removed. This
is after 7 years of garage storage since painting. Powder coating always receives a bad review, trouble is like every other coating out there it's only as good as the prep work. It's very easy to throw powder coat over an ill prepared surface and end up with bad flakey results.
Agreed. The best thing about Powdercoat is you don't have to do it and it looks great when new.
Once tested though I agree and my MK was as bad as any, no prep at all. Peels of in sheets once compromised
quote:
Originally posted by ReMan
Agreed. The best thing about Powdercoat is you don't have to do it and it looks great when new.
Once tested though I agree and my MK was as bad as any, no prep at all. Peels of in sheets once compromised
Another vote for POR15 here. Not cheap but better than hammerite.