Sound Proofing Ceiling

[howz]

I'm going to finish my ceiling with drywall. I think I'll screw the drywall directly to the floor joist (so no strapping). If I stuff fiberglass up into the joist and then cover with drywall, will that sound proof much. I'm thinking, not, because the drywall will be in direct contact with the floor joist. Sound waves will travel along both surfaces.

Any suggestions out there on a better way (without braking the bank)?

Thanks

[pgtek]

hi
u will resolence strip.
there strip of metal that absorve the sound and you applied the drywall to them.
an other way is to used egg crate the carton type, you insert them between the floor joist or used some empty jar with the lid remove the sound get trap in it there good sound barrier to

cheers

pg

[howz]

Anyone else have any ideas ... ???

[majakdragon]

You can use a sound deadening fiberboard availiable at your local home center or lumber center. This can be used on existing walls and ceilings to eliminate or reduce sound transfer through the walls and ceilings. You may need to install 2 layers of the fiberboard. Celotex is one manufacturer of this product,although there may be others.

Information on this:
http://www.aknightcompany.com/productline/soundstop/ss_overview.asp

Good luck

[howz]

Any idea what kind of results this provides?

I'm not trying to make a sound studio or anything ... but I would like to put
a decent home entertainment center in the basement and not have the entire household listen to the movie.

Thanks for the advice ...

[majakdragon]

This should provide a rating of 42 or better when installed behind drywall(as per the instructions). This means that loud voices will barely be heard. This should be suitable for the application you are describing as it is designed for media rooms and the like. The space between the basement ceiling and the floor above will also provide some sound deadening properties.

STC Ratings (Sound Transmission Class)

50 Loud Speech Not Heard

45 Some Loud Speech Barely Heard

35 Loud Speech Heard; Not Understood

30 Loud Speech Fairly Well Understood

25 Speech Heard Through Walls or Floors

[tlogan]

howz -

Whatever you do, DON'T use egg cartons up there. It is probably the worst mistake you can make as it is a HUGE fire hazard and would NEVER get through an inspection. You ARE getting a permit, aren't you? There are many other forums where you can find a wealth of information on soundproofing rooms. Just do a search on "home theater forums."

Good luck. Let us know what you finally decide and how it works out.

Tom

[howz]

Yeah, no offense to Pgtek, but I had no intention of using egg cartons or empty jars.

Thanks for the help guys, I have direction now.

No permit, government will jack my property assessment if they know I have a finished basement.

[majakdragon]

There is another "egg crate" material that is used for soundproofing(not actual egg cartons). This is also dangerous to use as it is extremly flammable. This is the same type of material that was used at the night club in Rhode Island a few years ago where 100 people were burned to death.
There are various forms of soundproofing materials out there. Research them and make your best choice.

Good luck with your search.