Built my vocal booth - Now how do I treat it for reflections

Hello all. I have been reading this forum for a day or two and am amazed at the pure wealth of information. I have used the search feature for this question but haven't totally found my answer so.... 1) I am located in Southern California. 2) I have a vocal booth that I just built and now need to treat the inside for room reflections. You can get dimensions from the attached picture. I am using an Exterior 2' wide steel door for the room (It has the built-in weatherproofing so I thought this would help with sound escaping/entering) and, at this time a 2'x2' fixed window from Lowe's. (Just a standard dual-pane vinyl window) I know, I know, I'll be replacing that soon enough with a custom built window. I know I'll need to cover the inside of the door as well as the entire room but with what? I am on a budget so... I'm not looking for pro-level treatment but something that will make this a usable space for vocals as well as for acoustic guitars, etc... Is carpet a good enough insulator for room reflections? Should I use fiberglass panels covered with "something"? The booth is built using standard 2x4's (not staggered) and a single layer of 1/2" drywall inside and outside the booth. I used R19 insulation inside the entire booth except for the rear two walls (the 6' 8" sides) as these were existing and I didn't want to open them up. (I know, I should have) My main goal is to have a room that will be mostly "dead" / "dry" but not too dead. Thoughts? Thanks in advance! Brad

You it as dead as possible. A room that size does have a desirable sound to it. Treatment is easy. Use 4" thick fiberglas and face it with an open cloth. Andre

Thanks AVare. Is that to say that I should use a 4" rigid fiberglass? (Probably not since that's probably impossible to find) So I should put up some R13 insulation and then cover it? I'm guessing I should use an insulation that has no facing right? This way the sound can penetrate straight through the cover and then into the insulation. Anyone else have $.02 to say about this recommendation?

No facing. I wrote nothing about rigid. 3 lb/ft^3 glass or 4 lb/ft^3 mineral based insulation. Use bob's page for more product info. OC, Knauf, Fibrex, Roxul all make suitable material. Andre

luvtorekord wrote:

Anyone else have $.02 to say about this recommendation?

I'd take Andres recommendations and consider myself a lucky man ;)

I'd take Andres recommendations and consider myself a lucky man Wink

Done~! Don't have to tell me twice... :jammin:

One more thing: When I install the fiberglass insulation, especially on the ceiling, how should I attach it to the wall? Make some sort of frame? Mount directly to drywall with staples, adhesive, etc... Sorry that I sound like such a "noob" here :roll: but this is really my first time treating any room for ANY kind of sound issues. Thanks in advance! ~ Brad

You may locate your answer here: http://www.johnlsayers.com/phpBB2/search.php

Like this? http://www.johnlsayers.com/phpBB2/viewt ... ation+wall Thanks, ~ Brad :snack:

Anyone?

Hey Brad, I've read somewhere (can't find the link) about people using string or twine stapled across the underside of the joists to keep the insulation from falling out while you are installing it. Personally, I'm thinking about using nylon strapping (the stuff that they put around large boxes and crates for shipping), for my walls and ceiling, as I have a huge roll of that on hand. - Stuart -