drum riser

I know that there are many threads about this subject, but I still need some help. The studio that I now work in was built wrong and I'll try to explain how it is but I might not be able to do it just right, but anyway, I have three rooms and are built on ONE floor, the wall of my mixing room with a window is screwed to the wall of the recording room, all my walls that should should not be touching the wall of the room that it is facing is touching, and was screwed together, so I get a lot of bleed from the recording room, and from the hall, when people are walking on it. There is no way to fix this other than taking the whole thing (with really nice brazilian hardwood walls) apart. What I want to do is put in a drum riser to get rid of some of the bleed in the mixing room, and the other room, I have access to dense foam, that I can cut in whatever size I want, should I make something like the platfoam product they have, then I could cut the pieces of foam and use MDF Any ideas? Thank you very much

What I want to do is put in a drum riser to get rid of some of the bleed in the mixing room, and the other room,

I don't think a drum riser will help much to get rid of bleed between the rooms: It would only help to reduce any impact noise that might coming through the floor, but it won't have any effect at all on the airborne sound that is hitting the non-decoupled wall between the rooms. Since you say that decoupling (or rather, the total lack of it) is the reason for that bleed, then I doubt that drum riser will help. On the other hand, if your floor is ALSO badly built, then a drum riser might help to reduce structure-borne impact noise. What is the floor made of? - Stuart -

It's made of hardwood, glued and nailed on top of plywood, and then on top of 2 by 4 that are on top a some kind of rubber(that did not work) I'm thinking more of just trying to do something so that I can't feel/hear the drums through the floor, I'll still have bleeding but I'm just thinking of things that will help a little, and the studio is on the second floor, so there is bleed on the first floor, not much but there is, so I was thinking of a drum riser to help that as well. Thanks

as far as bleed between the rooms, I know that I will still have that, but if I get rid of some of the impact noise that is coming through the floor it would help a bit, I hear what you say that it won't have any effect at all on the airborne sound that is hitting the non-decoupled wall between the rooms. "Since you say that decoupling (or rather, the total lack of it) is the reason for that bleed" I can feel the drums on my feet when I am in the control room, so I am thinking a drum riser might help that. And yes, I am sad to say that the floor is also built wrong, the guy that tried to build it right built the floor and then put the walls on top of it. So it's concreet, rubber two by fours,plywood and then hardwood. one floor for the whole studio

I can feel the drums on my feet when I am in the control room, so I am thinking a drum riser might help that.

}Yeah, that makes sense. It0s impact noise in the structure that is giving you such a hard time, plus the lack of decoupling! So a drum riser might help to reduce the impact noise to some extent, sure.

I am sad to say that the floor is also built wrong, the guy that tried to build it right built the floor and then put the walls on top of it. So it's concreet, rubber two by fours,plywood and then hardwood. one floor for the whole studio

OUCH! No wonder you have a problem! The entire studio is built on top of a drum head! I'll bet that the entire floor cavity is resonating in sympathy with the drum kit.... Not fun to mix in there! I'll bet that your mixes don't translate very well either, since the room itself is doing weird stuff to the low end. The "easy" solution there is to take off all that junk flooring, down to bare concrete, and use that as your floor. That would be help lots, but I guess it isn't possible? - Stuart -