I just finished my new room, just posted in All Out Assault, and I incorporated MLV on the ceiling of a 16 x 20 room. It cost me $500 for the materials. I have done many rooms and this is the first with MLV. Was it worth it? Overall it does help (living room is directly above) but it kicked our butts getting it up. I used a drywall lift and still had to cut the 15 foot rolls in half to have a chance in cranking it up to the ceiling. I had to screw it in and then go back and add some nails. We taped all the seams as well.
The heating ducts will ruin the effects of MLV if you don't treat them properly. DOn't ignore them, they carry everything up and away.
My ceiling is 16 OC joists with rockwool in it, MLV, hat channel, 2 layers of drywall with greenglue, then diffusion and absorption to taste. I'll try to add some of the construction pics here but over on AudioCircle my complete room build is documented.
The heating ducts will ruin the effects of MLV if you don't treat them properly. DOn't ignore them, they carry everything up and away.
My ceiling is 16 OC joists with rockwool in it, MLV, hat channel, 2 layers of drywall with greenglue, then diffusion and absorption to taste. I'll try to add some of the construction pics here but over on AudioCircle my complete room build is documented.