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I'm designing a wall/door sized 2.6*2.4 meters. It'll be made of 10mm thick OSB sheet, sandwiching 50mm of rockwool: enter image description here I consider using 50mm - wide strips of 22mm OSB as studs to fix sheets to. To avoid warping and have stability as the wall is not fixed.

The questions are:

  1. Is it worth to put something like this between studs and the sheets to limit low-frequency sound transfer through studs?
  2. Am I right about timber vs OSB being less stable?
  3. How many screws do I need and what kind would suit this purpose the best?
  • The closed cell foam strip may help quite a bit to reduce noise at the connection points. I am not sure I understand the sandwich of son and rockwool is the wall the other side or another sheet of osb. Less screws less noise transfer – Ed Beal Jun 11 '17 at 22:04
  • @EdBeal OSB-rockwool-OSB is all there is. Total wall thickness 70mm – Gleb Jun 11 '17 at 22:09
  • OSB is cheap, and looks cheap too, and deteriorates much more readily, and really does not like water. Consider plywood. – Harper - Reinstate Monica Jun 12 '17 at 14:09

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