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Old 07-20-2016, 08:27 PM   #1
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SMB floor construction question

I just picked up a 2006 SMB RB50 E350. I'm about to rip into the floor to install an Espar D2. I'm not sure what is under the carpet. Does SMB put a plywood floor down? or other insulation? I'm wondering how far down I need to go to get to sheetmetal. TIA
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Old 07-22-2016, 08:50 AM   #2
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In my 95 SMB they had only plywood and then carpet. I couldn't believe the floor had no more insulation. Sorry I can't answer for your 06 but I would sure hope there is a layer of some sort of insulation there as well.
Can you open up the rear doors and pull the trim piece/threshold that runs across? It should give you a good view of what's stacked up from the sheet metal there.


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Old 07-23-2016, 04:33 AM   #3
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In my 95 SMB they had only plywood and then carpet. I couldn't believe the floor had no more insulation. Sorry I can't answer for your 06 but I would sure hope there is a layer of...

SMB builds as cheap as possible for warm weather use. 1/2 inch plywood on the steel floor is a thermal break and has an R rating of 0.62. Good enough. The upper walls are canvas in most cases. Did you expect more?



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Old 07-23-2016, 11:30 AM   #4
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For the money they charge for a new one, which by the way I would never buy, I would expect more. Lots more!


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Old 07-25-2016, 10:16 AM   #5
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Thanks guys. Looks like 1/2" plywood and no insulation. We'll see how that works for winter living at 7000 feet.
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Old 07-25-2016, 11:14 PM   #6
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You are going to need sheepskin slippers to stand on the floor in winter, guaranteed.
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Old 07-26-2016, 09:19 PM   #7
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You are going to need sheepskin slippers to stand on the floor in winter, guaranteed.





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Old 07-28-2016, 10:05 PM   #8
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Sportsmobile will build however you want it. I had them put engine driven rear heat/ac and insulation in the floor with the hot pipes from the engine going down the middle of the floor. My floor is nice and warm when I step down with my bare feet.

Now if I can only find a way to do "auto start on hi/lo temp" with my Promaster.
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