Framing for Sound Proofing

artinall · Nov 10, 2019

Putting up a wall, that separates a large open space in a basement on slab.

One side will be a bedroom and to the other, a movie room with great sound. Even when you want to sleep.

For the bedroom, am planning on a walk-in closet that will run majority of the length to act as a sound block. The wall will have a typical pre-hung, hollow core door set off to an end that matches a bathroom door nearby.

- Would 2 x 6 wall framing and deeper insulation really deaden the sound more than 2 x 4?

- Little concerned about setting the pre-hung unit in 2 x 6 studs ... any ideas?

griz · Nov 10, 2019

it takes much more than just a deeper framed wall & insulation to block sound.

gets expensive also.

think double wall, staggered studs, rockwool, drywall on hat channel just to name a few things.

its not just the wall to think about, floor & ceiling also.

there are many methods and products to use.

Stunt Carpenter · Nov 10, 2019

Sounds like you might be a homeowner working on your own basement. Interior doors are hung in 2x6 walls all the time.

A double wall will do more for sound than a 2x6 wall. Need to break the sound from vibrating through the studs

sunkist · Nov 10, 2019

Sounds like you need a solid core door, and sound proof drywall then just build a regular 2/4 wall.

Insulation does not sound proof walls but it does work well to insulate.

VinylHanger · Nov 10, 2019

Why would you have the movies going while you are sleeping?

Does the roxull sound and comfort stuff work?

I'd just do a 2x6 wall with that stuff a solid core exterior sealed door and call it a day if I wanted go cheap.

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artinall · Nov 10, 2019

griz said:
...
think double wall, staggered studs, rockwool, drywall on hat channel just to name a few things.

its not just the wall to think about, floor & ceiling also.

Rockwool looks like decent stuff. Figured on insulating the ceiling.

Stunt Carpenter said:
Sounds like you might be a homeowner working on your own basement. Interior doors are hung in 2x6 walls all the time.

A double wall will do more for sound than a 2x6 wall. Need to break the sound from vibrating through the studs

A homeowner? Not exactly but obviously not a framer either. Helping with someone's basement.

Asking to avoid using ripped extenders (jamb legs). Which I've seen and don't really care for.

sunkist said:
Sounds like you need a solid core door, and sound proof drywall then just build a regular 2/4 wall.

Insulation does not sound proof walls but it does work well to insulate.

Done lots of drywall but never 'soundproof'. Could you recommend?

VinylHanger said:
Why would you have the movies going while you are sleeping?

Someone with dementia, turning up the sound.

Warren · Nov 10, 2019

Gotta do something with the door, that is your weakest link. The exterior door would help, as it also seals at the bottom. You could keep the wall 2x4, then add 2"foam before drywall. Vibration is the worst enemy.

artinall · Nov 10, 2019

Warren said:
Gotta do something with the door, that is your weakest link. The exterior door would help, as it also seals at the bottom. You could keep the wall 2x4, then add 2"foam before drywall. Vibration is the worst enemy.

You suggesting installing an exterior door on an interior wall member?

Like the foam idea but...never to be adjusted/reset again.

Also like the double wall idea as I could inset the door easier.

artinall · Nov 10, 2019

Another question - would it pay to insulate the opposite closet wall (nearest inner bedroom). OR, should inner closet walls be left "open" for circulation (clothing, etc.)?

The closet too, will have a 6 panel door.

VinylHanger · Nov 10, 2019

The door is easy. Just order one with a 6 9/16 jamb for exterior walls, or any custom width you need depending on what your wall depth ends up being.

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hdavis · Nov 10, 2019

Air sealing is sound sealing. Make it as airtight as you can.

All your work can be partly ruined by lack of detailing.

artinall · Nov 10, 2019

VinylHanger said:
The door is easy. Just order one with a 6 9/16 jamb for exterior walls, or any custom width you need depending on what your wall depth ends up being.

Didn't know those were available - believe I checked before but won't admit from where!

DaVinciRemodel · Nov 10, 2019

Double wall – staggered studs… Auralex channel… Green Glue… Isolate the ductwork… Sealed solid core door… sound insulation… decouple as much as possible… the list goes on and on…

Rio · Nov 10, 2019

Here's some sort of mass loaded vinyl, not sure if it's any better than the standard stuff but looks interesting............

ScipioAfricanus · Nov 10, 2019

You could go with two layers of 5/8" drywall on the theater side.
That is a pretty easy and inexpensive way to get pretty good sound insulation.

Andy.

AustinDB · Nov 10, 2019

the Acoustiblok is pretty cool. saw a display at IBC where they had a bluetooth speaker inside a small enclosure made of this material and you could barely hear it. lifted the enclosure and it was very loud. Similar to the sound deadening material used in car audio but thicker...and expensive.

don't forget the ceiling area-if it's a drop, sound will travel-if not, sound would go through the ceiling to the ground floor.

re: insulating the closet outside wall-doesn't make any sense because the closet doors (bifold) will likely not attenuate the sound much. best best is attacking the partition wall and use foam for penetrations. attention to placement of the sub, as low frequencies travel further. may also get sound travel through the supply duct if not careful. flex duct would like be the best solution but register placement is the key. two supply registers on one solid duct is the kind of design that may transmit sound.

Jaws · Nov 10, 2019

We are building an office building for our company right now. We did this between the three offices, with batts in each side. 5/8 rock, solid core doors. Quite effective and cheap

Do it on master suites etc... on our custom homes as well

At my personal home, I did 5/8 rock on the whole thing, insulated all interior walls, rock wool in utility room. My personal study has an exterior door seal on the door separating it from the rest of the house.... I almost put a threshold, my kids are loud AF lol

Jaws · Nov 10, 2019

If your real worried about sound you can run a double pony wall above the ceiling to the roof deck. Never needed to do it but it would work well, I have done done double metal stud walls to the concrete deck and insulated with double rock for interview rooms at the AGs in the Clements Buolding in down town austin, same thing for the supreme court confrence rooms and the justices offices in the Supreme Court building of the Captiol Complex.

MN_general · Nov 10, 2019

DaVinciRemodel said:
Double wall – staggered studs… Auralex channel… Green Glue… Isolate the ductwork… Sealed solid core door… sound insulation… decouple as much as possible… the list goes on and on…

Exactly this!

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overanalyze · Nov 10, 2019

Sound Clips, hat channel, double 5/8 type x with GG between them. Keep drywall back from corners and fill corner with sound caulk. HVAC gets tricky. At a minimum change any ridgid ducting to insulated flex duct but that is still a weak point. Exterior door or interior with weatherstripping and an auto drop bottom seal.

Framing for Sound Proofing

artinall

griz

Stunt Carpenter

sunkist

VinylHanger

artinall

Warren

artinall

artinall

VinylHanger

hdavis

artinall

DaVinciRemodel

Rio

ScipioAfricanus

AustinDB

Jaws

Jaws

MN_general

overanalyze

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