Basementstudio in the Netherlands

Hi, i'm starting to build my home recordingstudio. It's going to be bild under my house, the basement. The walls are al build with single or double bricks, floor and ceiling are concrete slabs. Before i start making all kinds of financial calculation i want to know what the best dimensions of material i need. I've read Rod's book, but here in the Netherlands some materials have other dimensions. The picture StudioWolff-empty.png are the dimensions of the existing walls. In the control room the max sound will be around 85db and in tracking a drumkit (+/- 100 db). I'm going to desing a vocalbooth also in the tracking room. My budget is around 3000-4000 dollar In the StudioWolff-side.png you can see i've named some walls and want to know how to make a good isolation between the two rooms en between the rooms and the livingroom (otherwise my wife will go crazy ;) In the Trackinroom.png there you can see the start design for making a box in a box. Because of the existing wall and this design, did i create a 3 leafs problem? Is isolation needed on all brickwalls, or only the wall between tracking an controlroom? The outside brickwalls are below the earth surface, do still need to create a 2 leaf idea? Walls; What about the dimensions? The wooden studs only need to carry the wall and new ceiling. 38x75mm for studs fine? 50 mm for insulation fine? 30 mm air gab between wall fine? Or should i go for 38x100 mm studs and 75 mm insulation? Ceiling: And same idea for ceiling. Concrete slab - 50 mm insulation - air - 50 mm insulation - 2x dry wall (12mm each), good idea? Floor: After reading Rod's book i don't going to build a floating floor. Good idea? The studs are only touching the floor and ceiling en between them i put "bouwvilt", it's 10 mm soft material or neoprene. I know i leave some walls out, but those are completely new with a door in it and those are going to be drywall-insulation-air-insulation-drywall, my questions are about how to use the existing brick walls and ceiling. In Rod's book almost all examples are about wooden houses, and here everything is brick ;) Please can you guys help me in the good direction. Regards, Jeroen Wolff

Please can somebody help me to find the answers? Regards, Jeroen

38x75mm for studs fine? :thu: 70 x 45mm would be standard. 50 mm for insulation fine? :thu: 30 mm air gab between wall fine? :thu: build the whole construction - walls and ceilings - as an inside out system.

Thanks John, now i can almost finish my design...i will post the results soon. My english and construction scales aren't that good, so i have some questions about the drawing. 1) there is cloth on the inside of my room? no dry wall? 2) what to you mean by support beam to reduce span.... Regards, Jeroen

The drywall is on the OUTSIDE of the framing, thats why its called "inside out". Mass is mass, it doesnt matter if its either inside or outside the stud. Inside out is cool because you gain space for your treatment since the same studs that supports the mass, are used for the acoustic treatment. The only problem with inside out regarding acoustic treatment is that you are almost limited to cloth or slat walls. If you ever want a 100% reflective surface, you'll creating a 3rd leaf so you must carefully design your acousitc treatment before so you might have a couple of walls where it would just be a "normal" wall (not inside out)

so you balance the inside out walls with the inside walls. If you put up a wall and drywall it - then put up another wall parallel and next to it and drywall it you end up with one inside out wall and one inside wall. am I confusing you :)

John, thanks. Why did you advise the outside wall in my situation? I looks to me it is more difficult to build...or not? How do i attach the dry wall to the studs? First build it and than move it (with some strong guys) to the stone wall? Can i make the 3 walls inside out and 1 wall (with the door) and the ceiling normal (with dry wall inside) so i create a not to 'dead' room like jbassino is saying? Regards, Jeroen