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Old 05-15-2014, 04:35 PM   #1
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Should I grind out these rusty exterior screws and replace?

I have the inside side panels off and it seems quite a few screws are rusted (though the surrounding metal panels all look good). I'm gearing up for the big rust treatment and it seems like I should maybe replace the rusty exterior screws.

If I just derust the screw and hit the screw and surrounding area with rust treatment I worry that the tiny bit of metal inside the hole will still keep rusting... though I could seal around the screw and hole enough to block the oxygen... still, I don't want to wake up one day to find out I missed a million little rust spots (screw/holes) esp. once It's insulated.

I'm afraid of damaging the surrounding metal if I grind them all out.

Here's some pics... oh wait, still trying to upload the pics.

Hmm... "The board attachment quota has been reached", so I guess no pics.
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Old 05-15-2014, 06:28 PM   #2
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Re: Should I grind out these rusty exterior screws and repla

Dont host pictures here. Host them on Picasa or one of the other photo album sites.
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Old 05-16-2014, 05:44 PM   #3
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Re: Should I grind out these rusty exterior screws and repla

Probably the easiest fix would be to replace them with with stainless or rust resistant screws. Another option would be to treat the screws with phosphoric acid (sold under the Ospho name but most paint suppliers have a phosphoric acid based rust converter) to convert the rust then paint them or spray with undercoating.

Photobucket is another good choice for hosting pictures.
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Old 05-27-2014, 03:11 PM   #4
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Re: Should I grind out these rusty exterior screws and repla

Thanks guys, I'm going with the Ospho route.

Step:

1. Sand, Scrape, Wire, Curse rust,
2. Ospho
3. Ospho
4. Ospho
5. Elastomeric paint mixed with the ceramic beads over entire inside: floors, walls, and ceiling.

Once the inside's underway I'll treat and then seal the undercarriage as well.

That's probably a lot more fun to type than it is to do.

The elastomeric paint is supposed to be kind of rubbery so that should be great for sealing and a wee bit of insulation and sound proofing.

I'll probably seal the screw/bolt/nail holes in the floor but I'm thinking that the rubbery paint top and bottom may be enough to seal the small holes. (Not the 2" by 6.5" rust hole in the floor, maybe a good place for a bird's nest).
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