Author Topic: Should I mount my new stud walls on the new floor MLV and fix ?  (Read 2741 times)


  • Guest
Should I mount my new stud walls on the new floor MLV and fix ?
« on: February 26, 2015, 02:19:23 AM »
Hi, I am building 2 new stud walls and new floor to my bedroom to stop my neighbour's sound and impact noises from their bedroom and bathroom, they have an endearing 'little soul' who runs around thumping on the floor, also playing ball against the walls and floors and scraping toys on the walls whilst the parents noisily argue most of the time, all this at 11pm at night, so I have major impact and shouting problems to solve.

The floors are solid concrete ( 12" I guess with heating coils inside ) and the walls concrete multi-cavity ( only 6" thick but more core than concrete ) between our apartments.
I am top floor so nothing from above.
1. Should I mount my new 4x2 stud walls directly on the MLV I am laying on the floor ? (I am thinking the floor will be MLV +  cork + laminate floor tiles ? )
2. Should I also MLV the perimeter of the stud wall, or acoustic foam the perimeter ? (The new walls will be fixed 30mm away from the existing walls with no contact to the existing.)
3. Should I allow 5mm around the perimeter for caulking ?
4. I am also thinking of drywall cementing a 16mm soundboard directly to the existing walls before doing the stud walls ? ( Waste of money or not ? )
5. For my walls i am figuring foam padding the studs then 6mm closed cell mat glued to 12mm gyproc then 3mm MLV also glued to 15mm top layer gyproc.

Will the above do the trick or 'overkill' or just plain wrong ?

Randy S

  • Guest
Re: Should I mount my new stud walls on the new floor MLV and fix ?
« Reply #1 on: February 26, 2015, 04:39:27 PM »
1)Walls directly to floor ...then MLV and layers meet the wall.
2 and 3 ) just use acoustic caulk to create the seal.
4) if the walls are already concrete then its a waste of money ..just isolate the new frame , insulate the frame and staple the MLV to the frame then use the green isolation tape followed by double layer of gyproc.

Call me direct if you have more questions or concerns

Randy S.
760-752-3030 ext 3095