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Old 07-18-2016, 12:40 PM   #31
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Originally Posted by rjnye79 View Post
I have a foam sealant (Great Stuff type product) that I was gonna use for the bolt holes. However, the directions say you have to use a latex paint for top coating. Can I paint first, then seal? Or just use something different for hole fill? Also, are you insulating your floor? That is the main reason I was going to frame out the flooring...
You could definitely paint first and then seal the holes afterwards. That might be the easiest.

Yes, I am putting down 1/2" poly-iso foam board insulation first. And then 1/2" OSB plywood on top of that. Most insulation like that comes in 4x8 sheets just like the plywood does. To keep from having gaps I'm going to run my insulation first horizontally on the floor wall to wall, and then run my plywood vertically on top of it wall to wall. I'll use aluminum tape to cover the slight gap where the sheets of insulation meet each other.

Although a lot of people on here seem to subframe their floors you really don't need to as it just makes your floor thicker and less height to the ceiling.
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Old 07-18-2016, 01:59 PM   #32
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I'd show you photos of mine but I'm not going to start on my bus for another 3 weeks. But here is a website showing what I'm describing to you. I'll be doing mine the same way.

Good News Bus: Day 4 - Prep Work, Foam & Plywood
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Old 07-18-2016, 03:06 PM   #33
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"Great Stuff" is not at all metal friendly. Unless the metal is very well treated/painted it will rust it like crazy. You would be much better served using something like urethane based automotive seal sealant.
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Old 07-18-2016, 04:25 PM   #34
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"Great Stuff" is not at all metal friendly. Unless the metal is very well treated/painted it will rust it like crazy. You would be much better served using something like urethane based automotive seal sealant.
Like TANGO said. Not all spray foams are metal friendly and in response to your question about sealing before paint or after. in my opinion I would rather have the sealant stick to bare metal than to a layer of paint subjected to water.
And I know it is time consuming but I cleaned the old bolt holes top and bottom and would caulk 10-15 inside and then go underside and seal/spread the caulking to seal the opening also.
Water is a tough animal to keep out or in.
My normal job is to keep it in whatever I happen to be working on but my bus requires me to keep it out so anything you can do to plug a hole before paint will serve you better. Some weld all of there bolt holes but may I suggest some JB weld or there are a lot of new type's of putty out there that are supposed to be as good.
Great stuff is not a water proof barrier for anything.
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Old 07-18-2016, 04:28 PM   #35
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I'm just gonna take lil tabs of scrap sheet metal and metal glue them over the holes once the floor is primered.
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Old 07-18-2016, 04:32 PM   #36
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With some form of sealant under the scraps of course??
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Old 07-18-2016, 04:39 PM   #37
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With some form of sealant under the scraps of course??
The metal glue will do. Not reiventing the wheel here, just plugging some holes.
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Old 07-18-2016, 08:17 PM   #38
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I'm welding all of the holes in the floor. If you are going with less than 2" of insulation in the floor, polyiso type, then you could get by without the framework. I will be using some sort of framework myself because I'm going with a minimum of 3" possibly more.
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Old 09-09-2016, 10:07 AM   #39
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Hey everybody,
Wow, I haven't posted an update in quite some time! Things have been moving along at a decent pace and hopefully we can still make our January 2017 departure deadline. Here are some visuals, to get you up to speed:

We ended up putting down a coat of Rustoleum and filling our bolt holes with an elastomeric sealant. Then, our subfloor began with 1x3 furring strips which we decided to only use glue for (in lieu of putting more holes in the metal floor), hence the bricks and dog holding them in place to set...


Next, we filled the cells with 1/2" polyiso...


T/G OSB boards to finish the substrate and regular foamboard for insulation on sides...


Pretty much the cheapest vinyl flooring sheet we could find, though we do actually like the tile-esque pattern. It could be considered unorthodox to throw the vinyl down before framing, but we wanted as much of a protective barrier for the floor as we could manage...


More polyiso for the ceiling! (Doubled up, so the r-value is around 7.2...)


Another member of our family decides to join the crew...


Interior frame work begins with our dinette. The bench on the right will also house our battery bank/inverter/etc....


Our couch begins to take shape. It will have storage underneath, as well as in the backrest...


The forward "lounge area"...


...and there we are. Our solar package arrived a few weeks ago and I'll give an update on that soon. As of this week, the galley kitchen area has begun and we're still fleshing out some details on how it will all be arranged.

By the way, we got really excited about the Skooliepalooza, but just don't think we can get there in time. However, if there is a second annual event we'll likely be there (we hope to be somewhere in the SW/West Coast region in January 2018 ). Thanks for stopping by!
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Old 09-09-2016, 10:34 AM   #40
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Lookin' god guys! Keep the pix coming.
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