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Old 04-25-2017, 05:49 PM   #1
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Cleaning Floor after grinding rust

My husband and I are just to the point before we're going to apply coroseal and just after we grinded all of the nails and excess rust off of the floor.

What would be the best thing to actually clean the metal subfloor prior to the application of coroseal? I was thinking simple mop, but that in my mind would just push everything everywhere. What are your guys thoughts on this? Funds are low, and so can't go buy a shop vac atm.
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Old 04-25-2017, 05:52 PM   #2
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Drive to the spray car wash and spend a $1.50 to pressure wash your floor.

It's good to spray it clean before you shower the rust off.
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Old 04-25-2017, 05:55 PM   #3
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I just mopped a substantial portion of my bus with ospho today.
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Old 04-25-2017, 05:58 PM   #4
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Originally Posted by EastCoastCB View Post
I just mopped a substantial portion of my bus with ospho today.
Ospho and coroseal are similar products. Coroseal requires the rusted surface to Be clean and free of loose rust and other loose debris. I'm sure Ospho would be similar?
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Old 04-25-2017, 05:58 PM   #5
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Drive to the spray car wash and spend a $1.50 to pressure wash your floor.

It's good to spray it clean before you shower the rust off.
I do like this idea.
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Old 04-25-2017, 06:01 PM   #6
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Ospho and coroseal are similar products. Coroseal requires the rusted surface to Be clean and free of loose rust and other loose debris. I'm sure Ospho would be similar?
I just swept it a bit, dumped it around, then i brush it later with a wire brush.
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Old 04-25-2017, 06:20 PM   #7
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First step for me was sweeping out any dust or particles.
Second step was using a lead blower to try blow the rest out.
Third was opening all the windows and driving around for half an hour.
Final was mopping it a few times.
I used water, let it dry. Came back and used ammonia.
Stunk but, the next morning it was spotless.
Applied paint with a roller and done.
My formerly red rust bucket floor looked brand new.
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Old 04-25-2017, 06:27 PM   #8
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DL, you always do a great job. I like how you hammer your way through things.

I've got cats, and therefore will not go the ammonia route.

I like blowing the floors with an air hose better than sweeping. The spray car wash is the most thorough way I'm aware of.
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Old 04-25-2017, 06:50 PM   #9
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Thank ya Robin.
I tend to be a no nonsense immediate direct problem solver haha.
I would have done the power washer but, after saving my skoolie from the great red menace (rust) the last thing I want to do is reintroduce water into the mix haha.
The ammonia smell was gone in a day or two and I knew the metal was ready. The heavy duty industrial metal primer sealer rust blocker paint was horrible. It was like applying epoxy to the floors, the rolling was difficult but coated very nicely and it had heavy fumes for days. I tied fans inside with open windows to try get that sinus burning scent out.
Now, it is safely covered by a layer of two inch rigid foam, one inch of foil faced foam, 5/8ths inch of OSB and a series of mix and match rugs and carpet pieces.
It helped drying the floors when I didnt have skin on my bus haha. Things aired out pretty fast. That was my covered wagon era and I am glad those days are over.
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Old 04-25-2017, 07:09 PM   #10
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You really made your floor insulation thick. I'd be looking at raising the roof if I did that. I'm thinking a 1/2" of styrofoam insulation with a 3/4" ply top is about all I can afford height wise.

On my first floor, many moons ago, after cleaning I didn't know how to stop the rust. I cut plywood to fit the floor, then I got a five gallon bucket of Blackjack roof repair and used a tile comb to spread it on the floor before placing the precut ply on top and screwing it down. Surprisingly nobody could smell the tar even during the summer.

I've still got that same bus. The plywood in the floor is rotted out again. It's one of those older buses that has a problem with water entering through the windows and wetting the floor. The plywood is soft again, but the blackjack and steel floor are still good. The steel floor still doesn't rust. Unconventional, but it works. It's probably easier than ospho and all the other stuff. Once the ply went down there was no appreciable smell.
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