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Old 07-01-2018, 11:18 AM   #1
Mini-Skoolie
 
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Smallish rust holes in floors - patch or other? Discuss

OK, so I have finally got my floor up. Generally sound up front with surface rust from soaked ply but the rear is, as usual, worse. I have a couple of small perforations and am wondering whether it's really worth the time/effort/expense of patching them with steel, given that there could be places where it's almost through all over.
I'm planning to XPS insulate the floor, glued down with PL urethane adhesive and wondering about, along with the seat bolt holes, simply sealing off all with a ring/blob of adhesive as I lay the insulation. Another, better, thought is to put a patch of Blueskin or similar over the worst bits to ensure a watertight seal.
At the end of the day, this thing isn't a museum piece or gonna last forever, and just has to provide me somewhere to live for a few years, then maybe someone else for a few years after that.
I'm all for doing a good, proper job but this one, despite the fact that everyone does it, seems questionable. The floor would be plenty solid enough, and watertight, without patching, for years to come.
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Old 07-01-2018, 08:25 PM   #2
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Pics? I did extensive rust repairs on my floor but at minimum treat with a converter then paint. I tried different methods and overall to fill the smaller holes a dab of lexel sealant worked best.
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Old 07-02-2018, 07:01 PM   #3
Mini-Skoolie
 
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No pics sorry.. They're kinda standard rusty holes.. At worst, the metal is garbage for about an inch or two square.. and one strip along the back of one wheel well about a 8"-12" long, and about an inch wide..
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Old 07-02-2018, 07:02 PM   #4
Mini-Skoolie
 
Join Date: Apr 2018
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I should add that I still intend to convert rust, prime and paint as normal, not just stick insulation down onto an untouched floor
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Old 07-02-2018, 07:23 PM   #5
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Iím in the fix it first boat. At minimum cut out the bad spots, marine grade epoxy new metal in, then seam seal the overlap. No tools required and 100 times better than leaving holes. In my opinion that is
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Old 07-02-2018, 07:36 PM   #6
Mini-Skoolie
 
Join Date: Apr 2018
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Year: 1995
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That's definitely more appealing a suggestion than welding in.. 'seam seal'?
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Old 07-02-2018, 07:38 PM   #7
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https://m.autozone.com/sandpaper-and...ulk/167027_0_0
I used this for the bigger gaps after I welded.
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Old 07-02-2018, 07:39 PM   #8
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Right on.. thanks fella
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Old 07-02-2018, 08:19 PM   #9
Mini-Skoolie
 
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Could I ask why 'marine grade' over regular epoxy - it's not like it's submerged..
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Old 07-02-2018, 08:26 PM   #10
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Because I like to overdo things. But really water has an opportunity(even condensation) to make it up under your flooring. You said youíll be using XPS to mitigate moisture absorption, but if you use an epoxy thatís not moisture protected then that will be the weak point.. blah blah...
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