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Old 09-07-2014, 10:27 AM   #1
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Cleaning Underneath Motorhome


I live near the Atlantic Ocean and the motorhome is parked about literally 500 yards from the beach. I keep her pretty well washed and waxed, but feel I am not doing enough to keep the underside clean.

What recommendations do you have to reduce salt and grime on the motorhome or truck & travel trailer?

I have read some people put a lawn sprinkler underneath and let it run about 10 minutes, then move it several feet and repeat.

Blue Beacon has undercarriage wash options at a few locations.

Looking forward to your ideas!

Thanks, JohnnyB

2014 ShowHauler 45'
2014 Dodge Ram 1500 Laramie
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Old 09-07-2014, 01:17 PM   #2
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Not that I have any experience in your situation, but I would at least once a year take it to an industrial wash with underside bay and have it steam cleaned, not just power washed. Salt air is definitely the enemy

Brian & Nicola
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Old 09-07-2014, 01:20 PM   #3
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Once a week or 2 spray the jack rods with silicone spray.
If it is up on them.
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Old 09-07-2014, 01:22 PM   #4
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Take a pressure washer on the soap setting and spray at different angles, then rinse but don't get too close with the strayer. You could just use the hose. Once it dries off, find any rust spots, sand and paint or use an rust reformer paint or POR products. So far, I've only uses the rust reformer and paint and it seems to do the trick. I'm going to also try the POR product as that's a good option too.

I did speak to a coach owner who lives on the beach, he stores his coach away from the beach. He has enough work taking care of the house on the gulf shores.
Shawn and Donna
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Old 09-07-2014, 07:03 PM   #5
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A friend of mine used a oscilating sprinkler to rinse salt residue off from winter driving. He said he puts it at one end strings the hose the whole length of the MH and then pulls the hose to rinse the underside. Hope you get the drift of what I'm trying to say. Jim
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Old 09-07-2014, 07:04 PM   #6
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Very helpful advice!


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