I'm adding a 850 sq ft room to the back of my house. The construction
guys have just finished framing the raised floor.

Since we will have practice and record in the room, I want to keep
sound from going in or out of the room.

I'm worried that the raised floor with 3 foot crawl space will act as a
speaker and drive my neighbors crazy.

Is it better to use 1 1/8 inch T&G plywood for the floor instead of the
standard 3/4 inch? should I insulate the floor by adding r14 between
the floor joists before the plywood gets installed?

Is it better to screw in the plywood instead of using nails?

Idea's for the walls?

Any info on this would be much appreciated.

Dan

szguitar wrote:
I'm adding a 850 sq ft room to the back of my house. The construction
guys have just finished framing the raised floor.

Since we will have practice and record in the room, I want to keep
sound from going in or out of the room.

It's too late to worry about it now.

I'm worried that the raised floor with 3 foot crawl space will act as a
speaker and drive my neighbors crazy.

No, the issue is mostly going to be conducted low-frequency noise through
the floor. Noise conducted through the crawlspace is going to be higher
frequency stuff that will be easy to deal with.

Is it better to use 1 1/8 inch T&G plywood for the floor instead of the
standard 3/4 inch? should I insulate the floor by adding r14 between
the floor joists before the plywood gets installed?

Mass is _always_ your friend when dealing with low frequency problems.
You cannot have too much mass.

If the framing is in, it is probably too late to look at floating the
floor at this point, but you might still want to check out some of the
floating systems out there. Everest's books talk about a number of them.

Is it better to screw in the plywood instead of using nails?

Probably won't make difference in the noise issues. It _will_ prevent
squeaky floors twenty years down the road.

Idea's for the walls?

Any info on this would be much appreciated.

Stop right now and get the F. Alton Everest book on small studio construction
before you go any farther.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

try asking your question here before going any further

http://www.johnlsayers.com/phpBB2/in...7f16cb1417c80f
http://www.recording.org/forum-34.html

Don


"Scott Dorsey" wrote in message
...
szguitar wrote:
I'm adding a 850 sq ft room to the back of my house. The construction
guys have just finished framing the raised floor.

Since we will have practice and record in the room, I want to keep
sound from going in or out of the room.

It's too late to worry about it now.

I'm worried that the raised floor with 3 foot crawl space will act as a
speaker and drive my neighbors crazy.

No, the issue is mostly going to be conducted low-frequency noise through
the floor. Noise conducted through the crawlspace is going to be higher
frequency stuff that will be easy to deal with.

Is it better to use 1 1/8 inch T&G plywood for the floor instead of the
standard 3/4 inch? should I insulate the floor by adding r14 between
the floor joists before the plywood gets installed?

Mass is _always_ your friend when dealing with low frequency problems.
You cannot have too much mass.

If the framing is in, it is probably too late to look at floating the
floor at this point, but you might still want to check out some of the
floating systems out there. Everest's books talk about a number of them.

Is it better to screw in the plywood instead of using nails?

Probably won't make difference in the noise issues. It _will_ prevent
squeaky floors twenty years down the road.

Idea's for the walls?

Any info on this would be much appreciated.

Stop right now and get the F. Alton Everest book on small studio
construction
before you go any farther.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."