Peel Productions - JohnG's Studio Thread

window and door openings on the live room side, there is another wall to go slightly in front of this for the control room.

Just a quick update, Furring channels on the ceiling "Hex" screwed into the timber battens above. Next is a layer of 25mm rigid insulation inbetween these channels and then two layers of 13mm soundcheck plasterboard (5/8th equivilent mass) JG

john, looks like you are going to have drywall, a very small airgap, and then more drywall. are these two layers of drywall your two leaves? i guess you are hurting on headroom so maybe that's the case. (i hope that's not supposed to be one leaf, because it's two). but if so i wonder why you're using hat channel rather than resilient channel. hat channel doesn't offer much in the way of decoupling. so IMO you're creating a resonant space without getting much if any benefit. also i wonder about the wisdom of having such a small gap, since you will have a very high mass-air-mass resonance that will cause a dip in isolation at that point, and below that frequency the two leaves will basically act as one anyway. so in essence you'll get the problem of having the mass-air-mass resonance dip but few of the benefits of decoupling the leaves, since the decoupling will only help you above the mass-air-mass resonance frequency. you may be better off with one thick leaf rather than two poorly decoupled leaves. you'd have to look at some tests and do some calculations to be sure, but i wanted to alert you to this. sorry if i missed some details on your ceiling construction, i didn't see them. dan

Ditto what Dan just said!! :shock:

Guys, thanks for that - I thought it may raise some eyebrows!! (1) Yes, headroom is a major issue, I just could not lose 100mm on a false ceiling. (2) Isolation - although important to a degree my close neighbours are 25 feet away and I will only be tracking drums early evening and weekends. (3) John came up with this idea, he said he used it in another studio and it worked out OK. I know it's not ideal but I need the space to be workable and it was the best solution we had as I did not want to rip down the existing plasterboard and there is no access to the ceiling cavity. I am guessing John S. saw it as kinda mass air mass although it is connected by the hat channel and the space is small. Knowing him he probally disregarded this 10mm plasterboard you can see!! Time will tell here I guess. PS: Had a little daughter today; Gorgia Frances Grace - 8pounds,4 PPS: there are decoupling clips between the channels and the original ceiling not that it makes alot of difference probally, but I just wanted to point out the channels are not "hardwired" the ceiling diretclly. JohnG

congrats on the baby, john! :) :) dan

If you have resilient clips along with the hat channel, isn't that actually a little bit better in terms of performance than just RC? Just curious.

Yes, that's true... But they're designed to be used on open joists, not an already finished ceiling. If on a finished ceiling, the gap is so small that the benefits of the air gap are hardly realized.

JohnGardner wrote:

Guys, PS: Had a little daughter today; Gorgia Frances Grace - 8pounds,4 JohnG

Congratulations John!!! (I think that deserved a little more prominent mention.) :P Frank

25mm (1") semi rigid board 48kg/m2 up in between furring channels double layer of 13mm noiseline board next. JG

Double layer of 13mm "Noiseline" plasterboard screwed, taped and plastered and sealed around the edges. One thing I am thinking about now is colours - I read somewhere that painting a small rooms ceiling matt black makes the room feel bigger, any other colours do this as well that I could use in combination with a black ceiling? JG

These photos show a layer of 10mm rubber and the first layer of 21mdf flooring going over top. The rubber is there to help STC and help with impact noise going into the control room and outside world.

Great pix! 8) Keep 'em coming -- seeing progress is inspirational! :mrgreen:

been busy of late so the studio has run a close second to life but here is some progress. First internal wall boarded up inside/out with insulation being stapled to the back to deaden wall. You can see window and door openings now. I have builder around this week to cut the second wall - you can see space on floor for this. i am also going to add another "finishing" layer of chipboard flooring in the live room. I am getting the wall box and multicore cables made this week so I am on the downward slide i hope!!

JohnGardner wrote:

. . . I am on the downward slide i hope!!

Or, as we sometimes say, "over the hump!" Keep up the good work!! :-D

Another progress report, I have had a week off work so have managed to get a few things rolling: photo one, 50mm rigid insulation in live room walls awaiting cloth covering once the ceiling is plastered and painted and the floor is sanded and laquared. photo two and three, new wall framing in place and insulated awaiting double layer of wallboard. This was hard to do as the new wall tapers away from the existing inside/out wall from 5mm airgap at the narrow end to a 100mm airgap at the large end. I actually had to cut some insulation off the back of the inside/out wall at the narrow end to get the new walls insulation to fit in the gap which is only about 100mm in total between wallboard layers. Enjoy!! JG

Simply Gorgeous. Keep em coming :)

A few update photo's to show I'm still at it: (1) Window opening showing cleats for glass double layer of wall board (2) Live room door frame showing cleats for rubber seal in place. enjoy!! JG

Quick update: (1) Wall box in the live room - pretty basic - 12 XLR's, four cans and two instrument lines. (2) Close up of the door bottom showing seal on one side. Other side needs to be done still. Thanks JohnG

Widow inserts done - fibreboard wrapped in black cloth. These look great thanks JohnS!! Double solid core doors both with homemade 12mmx12mm seals and 42mmx19mm cleats. JG

Looks terrific! 8)

Well its been a while but heres a few snaps of the window compleated - and door inserts done. Both window and door inserts are fibreboard wrapped in black cloth. Enjoy

Hi John, I just read your whole thread tonight and wanted to say I think it looks great and congrats on the progress. It's giving me additional hope and inspiration for my own project. Keep up the good work and those great pics. Kathy

Thanks Kathy, Now if I could only get my plaster friend around to finish the job he started three weeks ago I could get on with compleating it!! JohnG

Great work, Congratulations. I'm been reading a lot about acoustics and seeing your work has helped me to figure out how to build some things in my own project. I already rented the place for the studio and I about to start, but I have to tell you that I'm afraid of such a big project. I had a small studio in my appartment for the last 4 years and now I'm going to make it bigger, that's why I rented a big place in a second floor but make it soudprooffed will be a challenge. I will start my own thread because I really need help. I'm in hurry too because I'm already paying for the rent and haven't started the bussiness :shock: Ok congratulations again. Ed.