I was wondering if you were going to do that, you don’t really want those bare studs and joists exposed, they are a mold trap.
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Would be a good idea to have a vapor barrier, things get humid 
in grow spaces.
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The spray foam acts as a vapour barrier I believe
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Understand, but how does that stop the beams of wood from sucking up moisture.
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Paint with old fashion oil paint. Durable and very washable?
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LoL yeah I was thinking on the walls, the bare wood would be good to have a vapour barrier on, I am testing out some Oregon Huckleberry x Pink Animal Crackers in my vape, the weed is a little moist but it’s turning my brain to mush 
I would have had them bury the roof rafters in it, and the cross beams. Then panel up to the roof wall plate.
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That sounds awesome lol your gonna grow some actual trees in that “shed”…
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I don’t know the first thing about construction unfortunately so I’m dealing with what I get and just going with it humidity is something that I’ve been wondering about as well the foam does act as a vapor barrier but it didn’t cross my mind about the exposed wood do you guys think that it could be something serious to worry about? 99% of the wood is covered and the floor will have some sort of lacquer on it
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We’re you planing on running a sealed room with c02?
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Fuuck yeah whatever it takes to get these girls tip top 
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If you are going to varnish the floor do all the exposed wood as well, it will just suck up a lot of moisture, and become a problem if left exposed. You want a surface that you can clean if any mould starts, and not allowing it to work it’s way into the surface of the wood, where it will just keep appearing from.
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I would then look at double vapour barrier to save you trouble down the road .you will want as air tight as you can possibly get you don’t want your c02 escaping plus you want to protect the building from moisture .
When building mine they spray foamed like you’ve done plus put 2 layers of poly over the complete room silicone all plugs and light switches you also might consider waterproofing the bottom sill where the walls meet the floor. Ultimate would be to use a treated board along that bottom sill .
Cement floor is sealed to prevent moisture from soaking in did you install a floor drain by chance ? Wished I’d of done that in mine .
If you have any questions don’t hesitate to ask .
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Yeah that would make life a lot easier having a floor drain…
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Not sure what a double vapor barrier is I’ll have to look into it when I get home they did add this caulking sealing between the wall and the floor but it sunk a little in one spot so I’ll have to grab more and fix it now I’m wondering if there’s just a spray on rubber flooring that would fill in the little cracks on the floor? I don’t think I could add cement to that I am trying to move in the next year and bring this thing with me and it’s already going to have 6 tons of dirt inside of it. Why the floor drain? No I never added one
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You just double poly then sheet over with what ever you choose to put on the walls .
You could use bed liner material waterproof and tough as nails roll it or spray it on and can get it in a bright white colour for your floor should work good filling cracks plus non slip .
Another option but expensive is epoxy the whole floor makes for a beautiful finish waterproof smooth level surface.
Two reasons a floor drain is nice you can flush plants and squeegee the run off into the drain without having to pump out catch trays or flood tables .Able to pressure wash walls and floor and not have a build up of water laying around to evaporate makes for a quick clean and restart .
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That looks nice for sure… for some ideas, you may want to look into what is called a “wet room”…
Here’s one link you might find helpful…
Also, not sure where you are, but in California a lot of time what they do for shower pans is a oldy but goody method called a hot mop…
There is also some diy shower pan kits but honestly that is pretty advanced, there used to be one that walked you through it pretty well but I don’t remember.
Also, having a drain in there somewhat depends on what your outside conditions are like. Does the building have space underneath it? Where would you drain to? Traditional pipe setup?
To be honest though, I think if you are going living soil, and if you water properly I’m not sure you need that whole setup as I don’t believe with living soil you water to runoff… but if you at a later date want to do other methods like hydro or soiless that might be a different story.
You could make it like a whole shower though with hardy board…
Or you might be able to just get away with regular sheet rock and maybe some good white oil based paint meant for bathrooms with some mold resistant silicon caulking at all the seems. Maybe the epoxy floor as well but not sure if that is your cheapest solution…
Also, as far as moving, the weight of everything you are doing might be a consideration however, moving that whole thing is going to be somewhat of an ordeal anyway and at that point whatever weight you got might be going through the same process unless the whole thing was steel and concrete. But building that thing with the intention of moving it might have some considerations from the start entirely like how it might be jacked up and what not.
Speaking of which, one more consideration, if you are moving it, I’m sure it will flex some and depending on what you do, this could maybe crack things (like a thin concrete floor?) in that process.
I also don’t really know what I’m taking about, just throwing a bunch of stuff out there to confuse you and for others to correct me hehe.
Also, what is the outside of the shed like? If you don’t have it, might want to get some Tyvek on there speaking of vapor barriers.
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This is a US company that has brought European wet rooms to the US. I am going to buy from them if I can ever get the builder here to remodel the bathroom .
search for the difference between them and other “US wet room” suppliers. Europe has us beat hands down.
I actually researched @GnomeyByNature site but the shipping put it out of reach.
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I cannot vouch for the site I linked, it was just a random one I found.
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