Hey There,
It's been a while. Though, I have been working on the studio! I swear! In fact, it's kind of why I haven't posted in a while. Things have been ramping at my day job since everyone goes on break for Christmas, I've just been cramming in work on the studio whenever I have any time at all. I threw up 1 sheet of drywall this morning before I left for work
Anyway - Updates....
Drywall is nearly finished. I just have to put the second layer on the last 1 and a half walls. I guess technically I haven't done the "outer layer" on one section (that would be the interior drywall for the bathroom) but I did a REALLY preliminary test where I blasted a bluetooth speaker (I know, I know... it has nothing below 150Hz) - about 79dB and with only one mounted - and completely unsealed - door closed I was getting about 50dB of reduction on the main floor (I was looking for 20dB to achieve my primary goal of not disturbing sleepers on the second floor). Needless to say, this terribly flawed test still gave me a great amount of confidence and relief in the build. I've been carrying a knot in my stomach for a few weeks now, doubting everything. Having no idea whether all this effort was going to amount to anything.
TIP - When you're drywalling - especially the ceiling! - make sure, EVERY time you cover your res channel, screws or marks you immediately mark them again. We did our best to try to remember to do that, but you know, in the moment you can get momentum and next thing you know, we've got the tape measure out and we're trying to find 16 on centre - or worse yet, the studs or res channel that aren't placed in the standard spacing :S oops!
And mark your joists so you don't screw into them! We got lucky. Had a few misses going into the res channel but luckily, never hit a joist!
Doors are more or less ready to go. Frames are in, I've temporarily hung 1 door to check the fit (also helps to keep the hammers and drills quiet during night time building). So, I don't know if this was a bit mistake... The doors I bought are fibreglass filled with rigid or some sprayed in foam? I dunno. They're 1 3/4" thick. They're not light, but I think I'll need to slap a sheet of 3/4" MDF on each of them. I probably would have needed to do that with a regular door anyway... In hindsight, I should have just bought some flat slab doors. Oh well!
I ordered some automotive/trunk seal/gasket off amazon for the door seal. I got the biggest one I could find (1/2") to make it easy on me. But, I'm going to wait to install it until after I add the 3/4" MDF to the door as this will change the location of the jamb.
Lots of GG acoustic sealant. Especially since doing that rough test, it really made it apparent how much sound travels through the smallest of cracks/holes. So, every seam, gap, and missed screw hole (doh) gets some GG TLC.
At this point there's not much left to do. I got some 1" backer rod to stuff in between the bottom of the drywall and the concrete floor. I got that really gooey acoustic sealant (local building store closing down - it was $5CAD/800ml tube) which I'll install "backwards." I'll squeeze some sealant into the cavity then press the backer rod into it. This will squish the sealant into all the cracks/seams, plug up the gap, and leave a clean finish for doing the flooring. If I put the backer rod first then sealed it, I'd have that awful stuff exposed to make my life hell while installing the floor.
I'm rambling... here's a few pics.