[.:RoKsTaR:.]

I'm decoupling my basement ceiling from a few new rooms I'm building. Current height is 9' 4" and I plan to run new joists on the walls at about 8' 4".

1) do joists run across top plate with toenails or inside walls with hangers?
2) is 2x8 overkill for supporting a double 5/8 drywall celing? Trying to prevent sag..

Cheers!

 

[Fix'n it]

what will the the joist spans ?

 

[.:RoKsTaR:.]

24" would be best for sound isolation but I could manage 16 or 12 if I had to

 

[Joe Carola]

24" would be best for sound isolation but I could manage 16 or 12 if I had to

He asked the span of the joists...not the on center spacing.

 

[.:RoKsTaR:.]

haha, right

Roughly 10.5 feet, depending on if the hang between walls or sit on plates

 

[Gary in WA]

http://publicecodes.cyberregs.com/icod/irc/2009/icod_irc_2009_8_sec002_par023.htm

Gary
PS. be sure to add fire-blocking at the new ceiling level in the frame wall.

 

[.:RoKsTaR:.]

Because its so cold in Canada, we don't need fireblocking

 

[jagans]

Decoupling??? WTF? WHy not just put in a dropped ceiling so you have access to all your services? 2 x 2 is nice.

 

[.:RoKsTaR:.]

Decoupling??? WTF? WHy not just put in a dropped ceiling so you have access to all your services? 2 x 2 is nice.

Most efficient way to soundproof is to decouple, sound will transfer through anything that touches.

 

[Fix'n it]

for 10.5' , 2x6's would work just fine.

 

[.:RoKsTaR:.]

for 10.5' , 2x6's would work just fine.

good to know

 

[gregzoll]

Most efficient way to soundproof is to decouple, sound will transfer through anything that touches.

No, most efficient way is to not crank up the tv or music, in that it disturbs others in the home. That with knowing how to properly build or retro-fit the home, so sound does not transmit to the other floors.

Decoupling is a waste, and not needed unless you are either creating a sound or practice studio. If doing this for a home theater, it is more over kill than anything.

 

[.:RoKsTaR:.]

No, most efficient way is to not crank up the tv or music, in that it disturbs others in the home. That with knowing how to properly build or retro-fit the home, so sound does not transmit to the other floors.

Decoupling is a waste, and not needed unless you are either creating a sound or practice studio. If doing this for a home theater, it is more over kill than anything.

BINGO! I'm a professional guitarist and I need 2 rooms to record and mix in Not only to shield sound from upstairs, but also to protect my recordings from having twin 4 year olds and wood floor noise bleeding in to all the tracks

 

[jagans]

Maybe you should listen to the twins. What they have to say will mean more in the long run than anything else you'll hear. Especially the so called "tracks" Ive heard lately. Nothing but noise. Id rather hear the fan running.

We used to have a saying, "Those that cant play good, play loud" does that still apply?

 

[.:RoKsTaR:.]

Maybe you should listen to the twins. What they have to say will mean more in the long run than anything else you'll hear. Especially the so called "tracks" Ive heard lately. Nothing but noise. Id rather hear the fan running.

We used to have a saying, "Those that cant play good, play loud" does that still apply?

What are you talking about? Although my name may say rokstar, I'm a jazz guitarist, composer, and private guitar teacher. I have highly tuned hearing and need complete silence to mix/master music properly. If my kids hear me playing, they just want to play with me too. That in itself is ok when I'm not teaching, but I need to work in silence so they don't become upset that we can't jam.

I don't need advice about music, I've got 2 degrees and 20 years of playing to help with that

 

[gregzoll]

I think that someone was just giving you a good ribbing. As for the decoupling, there is some guys over in the AVS forum at avsforum.com that build these rooms for a living, and have some good info over ther, and there is actually a book available over there that goes through this stuff.

 

[.:RoKsTaR:.]

I think that someone was just giving you a good ribbing. As for the decoupling, there is some guys over in the AVS forum at avsforum.com that build these rooms for a living, and have some good info over ther, and there is actually a book available over there that goes through this stuff.

I know, hence the tongue out

Cool, I'll check that out