Cost of sound-proofing a basement bedroom
10/30/2018 at 12:01:15 PM
I'm looking for a rough cost to put in a basement bedroom, walk-in closet space (not the shelving), and combined office and leisure space in a basement. Total space is approx 700 sqft. The only special consideration is that the bedroom area needs to be sound-proofed (I hear a 2nd layer of drywall may do the trick?). No bathrooms, no laundry. The perimeter walls and ceiling are already finished, if that makes a difference.
10/30/2018 at 2:31:52 PM
Hi there,
I would not suggest doing double drywall. You'll want to do resilient bar along the joists, use roxul insulation & just standard drywall will be sufficient. If when you say the exterior walls & ceiling are finished you mean drywalled you can run the rez bar over drywall and then do another layer but you want a gap to dampen the sound otherwise it will just bounce around between the joists & transfer upstairs.
You'll be looking at a cost of approx $32-$35/sq ft to finish your basement with a permit, to code by a reputable contractor at a builder grade with a few standard upgrades like the sound proofing, you'll likely was conduit run in the wall for TV, maybe a bit of data & some LED pot lights.
Good Luck!
10/30/2018 at 3:49:48 PM
A Second layer of drywall will cut down some of the sound. Keep the joints staggered from the original.
The ideal way of soundproofing the ceiling and/or walls is to put Roxul Safe n Sound in the cavities, then hang the drywall using resilient channels. The Roxul muffles the airborne sound and the resilient channel isolates vibrations through the building materials (studs/ etc.)
10/30/2018 at 5:35:28 PM
Hi Paul,
The process of installing a stretch ceiling is approximately 1.25" below the existing ceiling line. This creates noise reduction automatically as dead air space is formed and sound bounces back from the ceiling, this is usually the least expensive alternative that landlords with suites opt out for. However one can also install blue styrofoam board on top of the existing ceiling and behind our ceiling, which will surpass any doubling up using conventional drywall. Certainly much quicker and less mess. Having said that we also offer perforated acoustic ceilings as well as two level ceilings which too address sound/noise.
Hope this helps.
10/30/2018 at 5:49:51 PM
Hi Paul,
What I would recommend is that you install Roxul ( a sound proofing insulation ) both in the walls and in the ceiling space.
Using a solid core door, as well would be a good choice, but most important would be the insulation.
Good luck, with your reno.
Brent
10/30/2018 at 6:43:53 PM
Unfortunately second layer of gyproc is a myth the walls and ceiling must be insulated properly with the appropriate matl.
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