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Old 07-28-2018, 07:10 PM   #1
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Subfloor questions!

Hello Fam,
Disclaimer, our skoolie is a family trips and vacations rig, we have no intentions of living in it.

So, Iíve got the floor prepped for paint. I want to lay down a subfloor and Iím not really interested in putting more holes in my floor. Iím either going to lay ply down and insulate on top of that, then lay laminate floor. Or... lay thin insulatikn and lay subfloor on it. So would either method be a decent way to accomplish this.

I understand how insulation works, no Iím not spraying in, I know itís superior. Just want to hear if anyone has done this style. Thanks in advance!
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Old 07-28-2018, 07:36 PM   #2
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Insulation first, then plywood subfloor if you want, then the vapor barrier and laminate.
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Old 07-28-2018, 07:41 PM   #3
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Insulation first, then plywood subfloor if you want, then the vapor barrier and laminate.
Ok now I'm in. What's vapor barrier ? And it goes above the foam board?
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Old 07-28-2018, 07:43 PM   #4
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Ok now I'm in. What's vapor barrier ? And it goes above the foam board?
Most laminate flooring uses a thin foam vapor barrier between the subfloor and top.
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Old 07-28-2018, 07:55 PM   #5
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Marc If I do put down in that order do I have to glue or can I float the bottom two layers? I understand how laminate works. I just want to be able to screw into the floor, walls and ceiling, would that be adequate to keep the floor down? Not really interested in filling 200 holes and then drilling a couple dozen more.
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Old 07-28-2018, 08:00 PM   #6
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Marc If I do put down in that order do I have to glue or can I float the bottom two layers? I understand how laminate works. I just want to be able to screw into the floor, walls and ceiling, would that be adequate to keep the floor down? Not really interested in filling 200 holes and then drilling a couple dozen more.
You're losing me now. Either you want to screw into the floor, or you're not interested in drilling a couple dozen more? I plan on my floor being full floating and I will secure all my cabinets and such to the walls.
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Old 07-28-2018, 08:25 PM   #7
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Ok, is it possible to put down insulation, then subfloor, not screwing or glueing any of that down. Then I will build structures and walls on top of the floors securing them to the plywood, walls and ceilings? Then put final laminate down like in a typical home set up.
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Old 07-29-2018, 09:37 PM   #8
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Ok, is it possible to put down insulation, then subfloor, not screwing or glueing any of that down. Then I will build structures and walls on top of the floors securing them to the plywood, walls and ceilings? Then put final laminate down like in a typical home set up.
Yes, that is doable. If your going to float the insulation and plywood, you'll want tongue and groove ply. Then use the chair rail, framing, as anchor points.

Use the pink xps as it has a very high compression rating.
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Old 07-29-2018, 09:48 PM   #9
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Ok, I thought eventually that once everything was put down it would hold it and also work together to make it all fit. Thanks for the reply!
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Old 07-30-2018, 05:03 PM   #10
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Ok now I'm in. What's vapor barrier ? And it goes above the foam board?
Yes but if I'm carpeting or linoleum do I still need the barrier? And what's it made of like weathersheeting?
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