Rust problem

[nightvision]

HI all,<br />I'm in the process of restoring my trailer. I wire brushed off visible rust and put a coat of spray primer. I did not get a chance to paint it and the rain came. After the rain I noticed that the rust showed up again. Should the primer prevented the rust from coming back?<br /><br />Thanks.

 

[umblecumbuz]

Re: Rust problem

Spray primer from a spraycan?<br /><br />If so, the coating will be so thin it won't stop the rust by itself. It is exactly what it says - a priming coat only. Needs to be covered to do its job. <br /><br />Me? I'd rub the whole thing down, give several coats, then apply topcoat asap after.<br /><br />If you only fish in the dark, Nightvision, no-one else will ever see it anyway!<br /><br />Ciao

 

[Bondo]

Re: Rust problem

Ayuh........<br />Primer, Primes...<br />Paint Seals..........

 

[Chris1956]

Re: Rust problem

Nightvision, I have had excellent results using Rustoleum Rusty Metal Primer. The best way to apply is by brush. This stuff is fish oil-based, and does a great job stopping further rust. It is a bit soft, not compatable with all topcoats and smells a bit (like fish) when it is wet.

 

[crazy charlie]

Re: Rust problem

I have had my best results when wire brushing first,then applying an acid like on-off bottom cleaner and rinsing,let dry and wire with thinners and apply extend rust primer /stopper and topcoating.Charlie

 

[Solittle]

Re: Rust problem

I been dropping trailers in salt water for over 30 years. Here is what I do:<br /><br />1. Chip out heavy cancer and hit all rusty areas with a wire brush on a drill.<br />2. Liberally apply Naval Jelly or other rust killer chemical following directions on the product. I think the active chemical is phosphoric acid which chemically neutralizes the rust.<br />3. Liberally brush all rusty areas with Penatrol and let dry for 24 hrs. This is vital.<br />4. Brush on a heavy coat of Rustoleum paint in the color of your choice.<br /><br />Note: Spray can paint is useless on trailers that go near salt water.<br /><br />5. Fresh water flush after dunking every time.<br />6. If your trailer needs brakes go the disk route or you will spend a lot of time and money fixing rusted-up drum brake parts.

 

[Mark42]

Re: Rust problem

How about calling your local rental outfit and see what a sand blaster rents for. That will make short work of any rust and loose old paint. And sand blasters are a good rental choice because you get really heavy duty portable units for a small daily price.<br /><br />Mark.

 

[umblecumbuz]

Re: Rust problem

Another good precaution, once you've gone to the trouble of painting the trailer - screw a zinc to the trailer metal somewhere, especially if you drop it into warm saltwater.<br /><br />Belt and braces.

 

[imstillatwork]

Re: Rust problem

primter is poreous. It will not keep water out. Water will soak right in. Never leave metal primed in weather! needs paint or sealer at least. spray can primers are extremly poreous.