Greedo's Cantina - Page 4

Finally finished installing all the subfloor. Was a lot of work, and only marginally cheaper than DriCore, but I think it's going to be outstanding. Monday I'll start insulating the rim joists and putting drywall between the joists above the HT. Tuesday the plumbers start relocating drains, and then I can go to work on framing.

I'd post pics but I'm stuck for a bit in South Dakota.

Here are some pics of the latest.

First the almost completed stairs:



Then the bath ready for breaking up the concrete for the shower rough in:



Subfloor is done:





And now my project for the day; sealing the rim joists with spray foam:

Got my permit, but ran into an inspector who was a bit of a tool. Off of the craft room I was going to have an unfinished storage room (where my main panel is). He asked me what the room was (on my building plan) and I said a storage closet. Never should have said closet. He said that unless I put an egress window in that side, I can't have the closet because it'd be like a bedroom. I explained and explained, but he wasn't going to budge. I'll just put up a wall after I get my final inspection. Just dumb though. I should have known better.

Sprayed the rim joists. I'll probably put back the old insulation, it can't hurt.

More lumber deliveries and my bathroom rough ins are completed.

Someone mentioned an alternative to Liquid Nails; I'm attaching a wall to a steel I-Beam and don't have a powder (22) actuated nailer.

Tried out the Tek screws, they took ages to screw in. I might combine a 22 nailer with PL300. It took a good five minutes to drill in one Tek screw, I think I'd go insane if I had to do an entire wall.

Got a decent amount finished today. Finished the subfloor in my bath, put some backing in between the joists where needed, and cut up 12 sheets of wallboard to put between the floor joists as a deadener. I don't think I like drywall that much...

Obligatory pics:

The drywall stack.



Backing for the walls.




Bath subfloor:

Thanks, Tim. My corded driver died last week so I'm left with just a Dewalt cordless that didn't have the oomph to drive the Tek.

Should I use acoustic sealant when I'm putting up drywall and GG between my ceiling joists?

More work completed. I finished putting up the rest of my foam insulation and the fireblocking for the other rooms in the basement. Also started putting up the first layer of drywall and green glue between the joists in the HT. I should be done with that by the end of the week, then I can start on framing.

Also, I have a supply duct running through the center of the home theater "roof" supplying the room above. I can hear sound through this right now and I'm concerned that even with all of my other sound isolation/proofing stuff, this still may be an issue. Should I have this duct replaced with a flex supply?

And I asked earlier if I should use some acoustic sealant around the drywall between my joists. Is that necessary?

A funeral is delaying any work this week but I think I'm going to replace that rigid duct with flex duct. The gains might be marginal, but it's easier to do now than live with the news after drywall is up.

That's the word I got from John at the Soundproofing Company.

Remaining questions as I start framing:

1. Should I build backer boxes for my inwall-surrounds?

2. Should I replace this rigid duct that supplies the room above, with a flex duct?

Thanks Tom and Austin...

For sanity's sake, I'll probably replace the ductwork; otherwise I'll kill myself with self-doubt.

For backer boxes (both for lights and speakers, is plywood okay instead of OSB? I have a lot left over, and can't think of a reason that it wouldn't be suitable. I'd be building plywood, then lining them with cementboard, correct?

The rigid duct is 6". I'll probably stay with that size flex since the joist space will get cramped if I upsize, especially after adding two layers of drywall/GG to the insides, plus if I need to put any backing in for hanging clips.
Edited by greedo - 4/5/13 at 4:17pm

Replaced the flex duct today, and while it was down, stuck two layers + GG between the joists where the duct was. Finished putting up drywall and GG in all the joist bays, and then put more insulation in my rim joists. I had sprayed it with foam that gave me R14, so the fiberglass was overkill, but I had a few rolls left over that were too small for 16 OC walls. So now I'm ready to spend tomorrow putting up my walls. A bit intimidated for some reason, since walls seem so permanent, but after doing some demo with a sawzall at a friend's house, I know nothing is permanent.

Also realized I went way way overboard in applying GG to the drywall between the joists. Somehow I used a full bucket. That sucks since it's not exactly cheap. At least I can't hear footfalls right now. I had my daughters running around upstairs, and could barely hear them. When I insulate the joists, and put the 2x 5/8" GWB and GG, I doubt I'll be able to hear an elephant up there.