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Treating rust spots on an older boat trailer questions
Posted on 10/24/13 at 3:46 pm
Posted on 10/24/13 at 3:46 pm
We are about to start a restoration project on an older single axle trailer where we will replace the bearings, leaf springs and u-bolts. I am wondering what I should do to treat the rust spots? The trailer itself is galvanized, but the side step, wheel cover and braces for the sides aren't, and they have rust all over them. Should I grind as much rust off as possible and then treat? Also, does anyone have any specific product recommendations? I notice that some of the rust preventive products say to paint right over the rust. I was thinking grind as much away as possible, ETA: apply OSPHO metal primer, then paint with POR-15 Gray Paint. Is there any other steps I should take? Any tips, advice or recommendations would be greatly appreciated. 
This post was edited on 10/24/13 at 7:50 pm
6
Posted on 10/24/13 at 3:47 pm to MC123
Sandblast and paint it.
Posted on 10/24/13 at 3:52 pm to MC123
If you don't get down to bare metal, you're really just delaying the inevitable. They make a cold galv spray too you may want to look at.
Posted on 10/24/13 at 3:53 pm to JAB528
quote:
Sandblast
I was hoping to be able to do everything myself, but I guess that would be the best solution.
Posted on 10/24/13 at 3:54 pm to MC123
U can rent a blaster. Its pretty easy to do.
Posted on 10/24/13 at 3:54 pm to JAB528
Get as much rust off first. Apply 2 coats of OSPHO and two coats of paint. Profit??
See ospho.com
See ospho.com
This post was edited on 10/24/13 at 3:56 pm
Posted on 10/24/13 at 4:00 pm to Capt ST
quote:
If you don't get down to bare metal, you're really just delaying the inevitable.
Yeah I guess I need to see how deep the rust is because those parts may need to be completely replaced.
Hoping for the best, expecting the worst!
Posted on 10/24/13 at 4:16 pm to Capt ST
quote:
cold galv spray
I love this shite. Guess that's why my trailers are crap.
Posted on 10/24/13 at 4:23 pm to MC123
Post pictures of the rust. No way for us to tell you what to do if not.
You might end up needing to put new parts if it is bad enough
You might end up needing to put new parts if it is bad enough
Posted on 10/24/13 at 5:04 pm to MC123
Por15 is the best shite ever for rust or to paint a lower unit with. it will not come off.
All ypu have to.do is knock off rust with wire wheel. doesnt have to be spotless. paint the whole trailer with it and it will never rust. and this is not an exageration.
Ive painted aboit 300 lower units with it and they all still look new. used in saltwater and dragging skeg in sand and it wont come off.
All ypu have to.do is knock off rust with wire wheel. doesnt have to be spotless. paint the whole trailer with it and it will never rust. and this is not an exageration.
Ive painted aboit 300 lower units with it and they all still look new. used in saltwater and dragging skeg in sand and it wont come off.
Posted on 10/24/13 at 5:56 pm to MC123
If you've got an air compressor, go buy a needle scaler. And some ear muffs.
Posted on 10/24/13 at 6:09 pm to greasemonkey
quote:
Por15 is the best shite ever for rust or to paint a lower unit with. it will not come off.
Who all wants to split a case?
Posted on 10/24/13 at 7:28 pm to Hammertime
quote:
Post pictures of the rust. No way for us to tell you what to do if not.
I left it in Grand Isle so we can work on it next weekend
Posted on 10/24/13 at 10:22 pm to MC123
I would never paint right over rust...wire brush off as much as you can manage and remove the rest with naval jelly....then apply whatever coating you want...
Posted on 10/25/13 at 5:36 am to Spankum
quote:
I would never paint right over rust...w
i said knock of the scale. with por15 thats all you have to do.
With any other coating you need to take doen to bare metal
and use ospho.
Once you use por15 youll never use anything else.
It has a lifetime warranty to never rust. they will replace whatever does rust,but it wont.
Posted on 10/25/13 at 7:22 am to greasemonkey
X100 on the POR-15. Make sure you put a coat of paint on top of the POR-15 though.
Like stated just take a wire brush or wheel to it, then paint it on, can use just a paint brush
Like stated just take a wire brush or wheel to it, then paint it on, can use just a paint brush
Posted on 10/25/13 at 7:54 am to greasemonkey
quote:
With any other coating you need to take doen to bare metal and use ospho.
So no need for a primer? Knock off what i can and paint with por-15 and I'm good?
Posted on 10/25/13 at 8:08 am to NYCAuburn
quote:
Make sure you put a coat of paint on top of the POR-15 though.
I did read that it is very sensitive to UV light
Posted on 10/25/13 at 8:09 am to MC123
IIRC, there is a rust neutralizer that you put on before paint. From what I have heard, you must follow the directions to a T. Do everything they say
Posted on 10/25/13 at 8:56 am to MC123
quote:
So no need for a primer? Knock off what i can and paint with por-15 and I'm good?
nope, por-15, then paint. its pretty damn easy. the can goes bad once you open it, so either buy just enough for your trailer or have a few projects lined up.
ETA, they do have some pre treat/cleaners, but you dont really need them
This post was edited on 10/25/13 at 8:58 am
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