Steel Frame Pre-treatment

[PNWorBUST72]

So I will be starting my conversion soon I think and was wondering if you guys painted/primed/ rust treated the metal before adding in the extra insulation when removing the ceiling floor/walls on your bus?

Obviously I will fix any damage as needed but I have seen a few folks treat the inside before insulating and wondered with what?

I thought a good rust converter type product on the rust areas after being cleaned and some sort of primer for the rest?

[Twigg]

Originally Posted by PNWorBUST72

So I will be starting my conversion soon I think and was wondering if you guys painted/primed/ rust treated the metal before adding in the extra insulation when removing the ceiling floor/walls on your bus?

Obviously I will fix any damage as needed but I have seen a few folks treat the inside before insulating and wondered with what?

I thought a good rust converter type product on the rust areas after being cleaned and some sort of primer for the rest?

After remediating rust (Ospho-based is best) and filling holes, Rustoleum Primer is the most common application before insulating and a new floor.

[PNWorBUST72]

So something like this after repairs and light rust removal using a garden sprayer:

https://www.amazon.com/dp/B003Q7XWU4...BGDAS6YV&psc=0

And then this to seal it all applied with a cheap paint sprayer?

https://www.amazon.com/RUST-OLEUM-77...stoleum+primer

[Twigg]

Originally Posted by PNWorBUST72

So something like this after repairs and light rust removal using a garden sprayer:

https://www.amazon.com/dp/B003Q7XWU4...BGDAS6YV&psc=0

And then this to seal it all applied with a cheap paint sprayer?

https://www.amazon.com/RUST-OLEUM-77...stoleum+primer

I'd use a wire-brush or flap-wheel in a grinder to get the loose stuff off, but yeah.

... and I'd probably roll it on

[PNWorBUST72]

Yeah I figured I would need to run over the rust with a wire brush/wheel first.

Roll on the primer or the converter?

[Twigg]

Originally Posted by PNWorBUST72

Yeah I figured I would need to run over the rust with a wire brush/wheel first.

Roll on the primer or the converter?

I wouldn't use a sprayer inside. Despite your best efforts the mist would cover everything, so roll on the primer.

With the Ospho, I'd use a large brush because it's easier to make sure it penetrates the tougher areas.

[PNWorBUST72]

Awesome, thanks!

[brokedown]

I used a big green scrub brush to apply ospho, then I rolled on primer after it had dried. For the inside of wall and ceiling I'm planning to spray rustoleum rattle can to get a light coat before putting anything against them. Still determining which adhesive to use for attaching rigid foam to the ceiling!