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Old 01-30-2019, 12:06 PM   #1
Join Date: Sep 2018
Location: Reading, Pennsylvania
Posts: 24
Year: 2006
Chassis: International IC RE300
Engine: International 7.6L diesel
Rated Cap: 33,000
Patching bolt holes in floor?

Hey. So I removed every last bolt in the floor and the rails( which was a b****h) but itís all clear. Just wondering best way to remove some excess surface rust. Wire brush on a grinder kind of works but not that great. Also, Iíve heard a couple ideas of how to really seal all the holes in the floor. Epoxy, epoxy with metal under it, caulk. Iím really not sure. I have to wait till spring so it settles right but just looking to hear
Some more ideas or success stories of the best way to really seal these hundreds of bolt holes. Thanks
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Old 01-30-2019, 12:15 PM   #2
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Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,553
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
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Once you're through with the wire brush and grinder, spray the floor with a rust converter such as Home Depots Prep & Etch, which I believe has been renamed Concrete and Metal Prep, or Ospho which is twice the price for the same product. Use a rust preventive primer. There are many methods for filling seat bolt holes. I'll probably use the epoxy and pennies, because have a whole tub full of them.
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Old 01-30-2019, 01:00 PM   #3
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Location: Eastern WA
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I did petty much what Marc described.

Wire brushed, swept, sprayed Prep and etch.

When that dried out, I found a chalky residue left on the floor. With a little effort it came off. I wire brushed the floor againand swept. Then I cleaned the floor with a TSP solution.

Then I rolled a good coat of Rusty metal primer.

Next will be covering all of the screw holes with adhesive flashing from Home Depot. Then I will roll a coat of Rustolium paint.

Many way to skin a cat
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Old 01-30-2019, 01:01 PM   #4
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Location: Unity, NH
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Year: 2003
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Chassis: International 3800
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After grinding, rust converting and priming our floor I used a tube of windshield goop (black) from the local auto parts store. About $30 for one tube which filled all the holes from 8 rows of chair rails and the plywood in a 16.5' section.

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Old 01-30-2019, 01:14 PM   #5
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Location: Houston, Texas
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Unless you are gonna weld 'em...I would suggest small pieces (1"x1") of fairly light sheet metal (at least 20 ga.) affixed with a healthy dose of OEM grade seam sealer.
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floor help, floor holes, floor holes caulk, rust

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