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Old 09-02-2020, 03:10 AM   #1
Mini-Skoolie
 
Join Date: Sep 2018
Location: Austin, Texas
Posts: 35
Year: 2002
Chassis: IC RE300
Engine: DT466E (250HP/880TQ) / MD3060
Rated Cap: 84
Floor Patch Products: What do you like best

OK. There are a lot of threads out there on patching bolt holes from seats and foot sized holes and I am starting out on the first build.

The plan is to weld the larger spots with replacement metal, wire brush, use rust converter and an epoxy product.

What are the favorite converter and epoxy products that do not break the bank?

Converter
Home Depot - Concrete & Metal Etch and Prep - 1 gall $17.00
Home Depot - Rustoleum Rusty Metal Primer - 1 gall $9.98


Expoxy
Anyone use PC-11 Marine Grade Epoxy?
$71.00 for 8# good for nearly 11sqft of coverage at 0.125 thick.
PC-7 is non marine grade, and about the same price.

JB Weld is 10oz for $21.00, which is pretty pricey.


After the metal floor, I am considering coating the primer with Redguard then laying down the 3/4" plywood. It would seal anything up and create a vapor barrier. Thoughts?

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Old 09-03-2020, 09:10 AM   #2
Mini-Skoolie
 
Join Date: Jun 2019
Location: Hagerstown, MD
Posts: 55
Year: 2001
Coachwork: Thomas
Engine: CAT 3126
Suggesting the crazy option...

One penny per hole...silicon caulk on each penny...smash it down and move on.
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Old 09-03-2020, 09:32 AM   #3
Skoolie
 
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Join Date: Jul 2020
Location: Eastern Shore of VA and Fleming County, KY
Posts: 151
Year: 2004
Coachwork: Thomas
Chassis: Saf-T-Liner
Engine: CAT 3126E210
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Quote:
Originally Posted by StatTarget View Post
Suggesting the crazy option...

One penny per hole...silicon caulk on each penny...smash it down and move on.
I've seen the suggestion to use a penny before, but I thought I had seen many people recommend against silicon products due to lack of adhesion over time.

I'm curious if that'll be a problem.

At first it seems crazy to use a penny that way, but then you think about the cost of other products, and it really is a cheap way to do it.

Is there any chance of galvanic reactions with the penny vs the metal floor?
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Old 09-03-2020, 09:46 AM   #4
Mini-Skoolie
 
Join Date: Jun 2019
Location: Hagerstown, MD
Posts: 55
Year: 2001
Coachwork: Thomas
Engine: CAT 3126
the silicon (or other) caulk should provide a thin layer between the dissimilar metals.

one could epoxy the pennies down. but honestly, silicon + gravity + preasure from the floor above should be fine.
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Old 09-03-2020, 10:40 AM   #5
Mini-Skoolie
 
Join Date: Jun 2019
Location: Arizona
Posts: 40
Year: 2002
Coachwork: Thomas
Chassis: GMC Savana 3500
Engine: 6.5 L 395 CID V8 Diesel
I painted the floor after rust remediation then the small holes got steel rivets. larger bolt holes got pennies with two part epoxy. then dap extreme stretch elastomeric caulking on everything then another coat of paint. probably overkill but its sealed up good
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Old 09-03-2020, 10:47 AM   #6
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Join Date: Jan 2019
Location: Philadelphia
Posts: 6,025
Year: 2003
Coachwork: International
Chassis: CE 300
Engine: DT466e
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Originally Posted by bp1791-unleashed View Post
Is there any chance of galvanic reactions with the penny vs the metal floor?
Rusting requires exposure to water and oxygen no matter what, so as long as everything is sealed up with epoxy and/or paint there won't be any corrosion. If water does get in, it's going to cause rust anyways - the galvanic reaction would just make it worse. But not for very long, since modern pennies are like 98% zinc with a thin copper outer layer.
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