Hey everyone, first post, searched the forum for "shed" and didn't find a totally similar situation so I'll post the question here. Sorry if I missed any previous duplicate posts! I'm a "need it right now" kind of person, but I really don't want to screw this up so I'm trying to slow down and do my research, and see if this is a horrible idea, or workable. PROBLEM: So I'm currently in a 10x10 (EDIT: 12x10) bedroom, which is well treated with 2x4'x4" traps (RFZ + cloud), but it's pretty dang small. I'm getting into composing/soundtrack work, and I'd like to be able to fit a drum kit, upright piano, hammered dulcimer, cello, mandolin, and guitar inside a studio space, and also have it be sound-isolated from the ladyfriend so I can make noise at all hours of the day/night without disturbing her. I'm not going to be playing metal music or anything, but I will have a drum kit inside. I don't bang on the thing like rock drummers do - quieter stuff like jazz / lighter fusion. Mostly, I'll be doing orchestral composing and recording acoustic instruments like piano, cello, dulcimer, etc. Wish I could give dBC levels but I don't have my drum kit here - it's at my folks' place in Seattle, don't have room for it here until I build a studio! I also have 2x Rythmik E15 15" subs in addition to my bookshelf-sized near-field monitors. I like having the sub-sub-bass abilities, but don't want to pollute the neighborhood with bass, either. I have neighbors all around, but there's a good 20+ feet to the closest neighbor house. Nobody around plays loud music or anything, but there is a LOUD train that comes through town (~1 mile away), so fairly good STC seems necessary. I'm located in Bend, OR, and there's no permit required for < 200sf buildings, so I'm limited to a 12x16' building. I'm looking at 12x16' sheds, with 8' walls, which are around $4k. I'm at a rental house, so pouring a concrete slab is not an option, unfortunately, despite the better acoustics! The idea of this post is to figure out whether I can make this sort of thing work in a 12x16' shed with this kind of money, or whether I should wait until we can buy a house (~1 year) and at that point do a dedicated build with isolated concrete slab, slightly larger footprint, etc. This would be a combined control room / recording space - not enough room for separate rooms. I've prototyped the layout of a 12x16' shed in my living room, and successfully fit everything listed above, when compensating for ~7.5" wall thickness, so slightly less than 11x15' interior dimensions. BUDGET: $8-10k. FLOOR: The floor is just wooden decking, stuck on the ground, leveled with concrete blocks or pavers, most likely. I think just plywood sheathing. I know it's not as good as a concrete slab, but as mentioned above I can't pour a slab here. So I thought I'd use Rod's recommended method in Home Recording Studio of 3pcf rigid fiberglass on top of the sheathing, then two layers of 1/2" plywood (seams overlapping), maybe with Green Glue between. So something like this, top to bottom: Bamboo flooring 1/2" plywood (Green Glue, maybe) 1/2" plywood 3pcf OC703 fiberglass Deck/sheathing Stone pavers? (not exactly sure what these things typically rest on) Ground/dirt! WALLS: The walls are sheathing outside (covered with siding) with exposed 2x4" studs, 24" OC. So I thought I'd put pink stuff between the studs, then Whisper Clips + hat channel, then two layers of 5/8" drywall (maybe with Green Glue between). I understand that having two layers of drywall on the OUTSIDE of the building would be much better for STC but don't see any way of doing that here. So in summary, the walls would be: Siding Sheathing 2x4's w/pink stuff (24" OC) Whisper Clips Hat channel 5/8" drywall (Green Glue, maybe) 5/8" drywall CEILING: Not sure about this... I was thinking the same construction as the walls, but the ceiling joists are 2x6's, so I'm not sure if they could bear the load of ~1000 lbs of drywall. Pretty hung up on this one. Not sure about ceiling code requirements either - do I need a vented area? I was a little unclear about reading that part in Home Recording Studio. I was hoping to have a vaulted ceiling inside the studio but now realizing I might need a flat ceiling with space above? Here are a few photos of the ceiling construction for this type of shed (just for illustration - haven't bought one yet): HVAC: Also pretty hung up on this one. In the summer, it gets to the low 90's sometimes, and can be 30's at night. In the winter, it can be ~0-10ºF during the day and -10ºF at night at the coldest, but typically in the 30's during the day and 10's at night. I was initially considering just using a mica panel heater (silent) inside the studio and some kind of air exchange, but after reading the HVAC section in HRS, it seems like humidity control and AC might be required after building a (basically) hermetically sealed box! My gear is this: Mac Pro 2013 2x Thunderbolt Displays Metric Halo ULN-8 Class D Audio stereo amp 2x Rythmik E15 subwoofers I'm estimating max ~5-6000 BTU/hr for all this gear (including me and one other person). WINDOWS: None. Figured I'd keep it easy on myself. MISC CONSTRUCTION: I can probably work with the shed company to do custom construction details, like 2x6 studs instead of 2x4, that kind of thing. QUESTIONS: Main unanswered questions are things like: - Will this thing be movable with 3500+ lbs of additional drywall and plywood in it, like when I move to a new house in ~1 year? Or would I have to dissemble / de-drywall the whole thing when I move to a different house? (Maybe this is a question for local shed movers...) - Is a wooden deck floor going to be a problem, structurally? (Or is this something I'd need to consult a structural engineer about? Uncle works at Boeing...) - Is the above-mentioned floor treatment going to be acceptable sound-transmission-wise? - What kind of HVAC system makes sense in here? PTAC's seem useful, but not hot on the idea of the noisiness, since I'll be in here for hours at a time monitoring (combined control room/recording). - Will the ceiling, with 2x6's, support a double drywall covering? If not, what should I do about the ceiling? Do I need an air cavity up there? Is the ceiling going to leak sound like nobody's business, and be the weak link in the chain? - Is this a horrible idea? Should I wait until I can buy a house, and then do a dedicated slightly larger studio, on a concrete slab, with double wall construction? Should I just stick with the room I've got for now? By budget is around $8-10k, as mentioned above.