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-   -   Hanging drywall on ceiling (http://www.diychatroom.com/f101/hanging-drywall-ceiling-144653/)

rightit 05-23-2012 08:11 PM

Hanging drywall on ceiling
 
I'm about to hang drywall and of course, am starting with the ceiling. I'm using a combination of 8' & 12' x 5/8" sheets. I'll have a helper and a drywall hoist. I'll be hanging perpendicular to the joists. The ceiling is 200 sqft and 8' 2" high (from concrete to joist).

1. on the edge where the ceiling meets the wall: How close to the wall should that set of screws be? Just like other edges (3/8" or more from the edge)? Or should it be further into the sheet (away from the wall)?

2. Also, as mentioned, concrete to ceiling joist is 8' 2", which means (hanging horizontally on wall), there will be a 1 3/8" gap between the floor and the bottom sheet. I'm not sure what kind of floor I'll be installing, but I think 1 3/8" is a bit much, as I won't be able to screw into the bottom plate.

I'll be using baseboard, but for the sake of air sealing, keeping insects out and soundproofing (on one wall in particular), this presents problems. Am I missing something? What is recommended in these type circumstances?

Thanks!

sixeightten 05-23-2012 08:16 PM

How does drywall help keep insects out? Fill in a small piece at the bottom and let the baseboard cover the gap.

joecaption 05-23-2012 08:47 PM

Or buy wider drywall.
Any real drywall supply will have have it.

princelake 05-23-2012 09:13 PM

when screwing your ceiling boards keep about 6 inches away from the edge of the sheet, your wall sheets hold the edge of the ceiling boards. rip some 1/2" plywood for a filler strips on the bottom, its more solid when nailing on baseboard and you wont get moisture wicking up the drywall from the concrete.

rightit 05-23-2012 10:46 PM

Quote:

Originally Posted by princelake (Post 927469)
when screwing your ceiling boards keep about 6 inches away from the edge of the sheet, your wall sheets hold the edge of the ceiling boards. rip some 1/2" plywood for a filler strips on the bottom, its more solid when nailing on baseboard and you wont get moisture wicking up the drywall from the concrete.

Good ideas, princelake. My only caveat would be on the soundproof staggered wall, which will receive double drywall (the plyboard won't dampen sound well).

I'll likely use 6" baseboard, so for that wall, I guess I could cut 3 or 4" off the bottom of the outer and inner sheet and stagger them, i.e., use a 4" strip in the middle for the inner sheet, allowing it to bottom out @ 1/2" from floor, then tack a 4" strip to the bottom of the outer sheet. A bit convoluted in explanation, but I believe that'll work. Thanks!

Thanks also for the screw info.

Quote:

Originally Posted by sixeightten (Post 927439)
How does drywall help keep insects out? Fill in a small piece at the bottom and let the baseboard cover the gap.

Drywall in combination with air sealing. Air sealing everywhere. Thanks for the response. I'll use a bit of all the responses here.

Quote:

Originally Posted by joecaption (Post 927452)
Or buy wider drywall.
Any real drywall supply will have have it.

Great idea, but I didn;t think about this issue when I ordered the rock. I placed it in the space before I closed in a wall. There will be no further drywall brought into that room unless it's cut into 4' sections.

Thanks again.

princelake 05-23-2012 11:07 PM

for sound proofing you should insulate the walls with safe and sound and solid core doors, if there is any kind of duct work (registers, cold air return) theres no point in doing anything cause the sound will go everywhere.

rightit 05-23-2012 11:29 PM

Quote:

Originally Posted by princelake (Post 927574)
for sound proofing you should insulate the walls with safe and sound and solid core doors, if there is any kind of duct work (registers, cold air return) theres no point in doing anything cause the sound will go everywhere.

I actually used mineral wool in that wall, as I needed to fit behind the staggered studs without touching (2"..."thinnest" safe and sound is 3.5"). Also, decoupled wall (2" mineral wool, 3.5" air space), double 5/8" drywall with greenglue inbetween on both sides of wall, double drywall joist openings between rooms, putty pads on all outlets on both sides, acoustic sound sealant at all seams floor plates and around outlet openings (both sides). That should give me an STC rating of around 58-60, but if that isn't enough, I can add one more layer of 5/8" drywall on other side.

Solid core door is planned (and there are two doors 4' apart to boot), foam inbetween door frame and door opening, door sweep. The space also has it's own central A/C system (so no ducts common with main space) with properly sized flex duct, strategic attentuation turns and isolated return air. System is sized to bring in and condition outside fresh air.

I'm determined. This room will keep sound in and keep sound out.

LarryM 05-26-2012 11:02 PM

Quote:

Originally Posted by rightit (Post 927580)
I actually used mineral wool in that wall, as I needed to fit behind the staggered studs without touching (2"..."thinnest" safe and sound is 3.5"). Also, decoupled wall (2" mineral wool, 3.5" air space), double 5/8" drywall with greenglue inbetween on both sides of wall, double drywall joist openings between rooms, putty pads on all outlets on both sides, acoustic sound sealant at all seams floor plates and around outlet openings (both sides). That should give me an STC rating of around 58-60, but if that isn't enough, I can add one more layer of 5/8" drywall on other side.

Solid core door is planned (and there are two doors 4' apart to boot), foam inbetween door frame and door opening, door sweep. The space also has it's own central A/C system (so no ducts common with main space) with properly sized flex duct, strategic attentuation turns and isolated return air. System is sized to bring in and condition outside fresh air.

I'm determined. This room will keep sound in and keep sound out.

So where is your theater build thread :whistling2:

sevenlol 05-28-2012 09:26 PM

if you haven't already bought it, just get half of your wall rock at 54" wide. it will cause you a lot less headaches when finishing.

*edit*
oops, sorry, just read your last post :(

rightit 06-02-2012 12:37 PM

Quote:

Originally Posted by LarryM (Post 929505)
So where is your theater build thread :whistling2:


:laughing:

It's not a theater (although it could be...). It's an office that I need sound isolated from both directions.

LarryM 06-02-2012 10:06 PM

Quote:

Originally Posted by rightit (Post 934521)
:laughing:

It's not a theater (although it could be...). It's an office that I need sound isolated from both directions.

:thumbsup:

Your description sounds eactly like a home theater. Pretty much what I am doing with my theater build.

Good luck

Gary in WA 06-03-2012 12:34 AM

http://www.finehomebuilding.com/PDF/Free/021174058.pdf

http://bestdrywall.com/files/ReduceCallbacks.pdf

http://www.lafargenorthamerica.com/G...%20English.pdf

http://books.google.com/books?id=lO8...exture&f=false

http://literature.usg.com/pdf/J510.pdf

Gary


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