masonry application - sound iso clips or 2 leaf wall?

trying to decide which would have the best result. walls sound iso clips onto studs that are on the cinder block, insulation, 2 - 5/8 sheetrock, green glue. cinder block with insulation, space, new wall, insulation, 2 - 5/8 sheetrock, green glue. as for the ceiling. insulation, sound iso clips, 2 - 5/8 sheetrock, green glue. basement studio. need all the hieght i can get. as well as square feet. with a 2 leaf wall i lose about a foot in width. i will not be able to center my mixing board/monitors with the racks. just wondering if the 2 leaf wall is over kill, since it is a basement. are the sound iso clips enough of a decouple and achieve a high STC. i imagine the ceiling is the real problem with sound getting up the second floor. thanks!

for the walls, the first options sounds about right but without measurements of the transmission loss of the existing walls its hard to say. if the basement is mostly underground then you're biggest concerns are openings like doors and windows and your ceiling. for the ceiling, if you have the option to add drywall under the existing floor, insulation, then RC and more drywall (see Rod's book on home studio construction) should give you pretty good isolation given the limited head space.

as for the ceiling is a rc 2 better than the sound clips with the hat channel? i guess what is throwing me a bit is the info on the sound iso company.

wow, concrete block counts as a 2 leaf wall. i was going to build a new studded wall. created a 4 leaf wall? so if i have it right. concrete block - studs - insulation - 2 layers 5/8 drywall. should there be some sort of tape on the the studs, green glue, or rubber? question is, green glue. is it really worth it on the walls. i need all the help i can get on the ceiling so that and either the RC 2 or the sound iso clips (buget permiting). thanks!

A filled concrete block is only one leaf.

Folks, an empty concrete block wall is a one leaf - but not as isolating as when sand filled......... So add air space - a wood frame wall with insulation in it and then a face of drywall and you have a 2 leaf system. which would be much better than the other option I see questioned by the poster. Rod

hello there rod. i just got your book. nice to be able to connect with you. a couple of my posts are running together, so i thought i might place it in this thread as well. hope the double dip is ok. the goal is to be able to record the loud stuff and have a band practice and not wake my 2 year old son up on the second floor. i have added a couple of drawings. this would be the space after demo. i did get rods book. really good stuff. its just a east coast basement studio is its own beast. low ceiling and all. don't mean to redundant but i am getting confused. i have a basement space. 3 wall are block the 4th sperates the basement and buts up to the stairs. currently the walls are studs and paneling applied. i figure i have 2 options for the walls after removing the beautiful paneling. 1) insulate, RC 1, 2 layers sheetrock w/ green glue. 2) insulate the block, stud new wall w/ space, insulate, 2 layers sheetrock, green glue. option 2 is pricey, labor intensive and will cut at least 12" off the width in an already tight space. if there is a big gain in reduction, well, it must be done. the ceiling will have to be - wrap the hvac, insulate, RC 2, 2 layers of sheetrock, green glue. question is. what goes up first. wall or ceiling? and do you attach the new stud wall to the floor joists? that sounds like a re-couple of the wall to the floor??? if you do the ceiling first, then the wall, then the wall touches a decoupled ceiling. wow, my head is starting to swim.... hope someone can square me away on this.