pandamonk
Well-known member
Ah, great to know he builds them. How effective are they? Yeh of course i'd use 703 or RockwoolHi Pandamonk. Well, John Sayers builds these kind of assemblies all the time. Its called an INSIDE OUT wall. Its STILL two leaves with the studs on the outside of one wall. This allows for insulation in the exposed side to be used as absorption...but I'd suggest using 703 or Rockwool vs standard batt insulation.
That all depends on your existing or planned floor? If you have a COMMON floor OR ceiling, or any other assembly like a wall..ie, one that is structurally tied to the two spaces, then yea...under some circumstances. In the case of a slab, maybe...in the case of a wood diaphram floor...I don't think it would make a difference that much as the whole membrane acts as one if these are simply partition walls(ie..in the middle of the floor joist span) If its a bearing wall, then the wall may set on a beam/girder that has floor joists which in that case may act as 2 different membranes...although, structural transmission of impact noise as well as vibration may occur simultaneously...which in my mind negates the use of U-boats. However, my disclaimer is in FULL force here.
Pandamonk, these kind of issues are ALWAYS difficult to analyse from a distance, in general, and solutions are usually case specific depending on all the other existing and proposed assemblies as well...ie...WEAK LINK syndrome. For successful TL as a whole, the COMPLETE PACKAGE has to be designed to work together. Simply assigning one solution for one assembly may be at risk of failure should you not address any others...ie..use of U-Boat Iso decoupling may fail to reach its potential when a HOLLOW CORE door is placed in the wall.
Right I'll tell you my idea: I'm planning (just in my head atm) on building decent iso booths, something like this, for use in all different environments. I plan for them to be a two leaf system all round(floor, walls and ceiling), with double doors and no windows. I will obviously include ventilation, lighting, power supply and audio cables.