Home Improvement

Home Improvement Questions? Ask a Handyman for Answers

Ask an Expert,
Get an Answer ASAP!

Home Improvement
This answer was rated:

Does anybody have experience with soundproofing techniques

such as double walls or...
Does anybody have experience with soundproofing techniques such as double walls or staggered stud walls, use of channel & clip ceilings, green glue and/or roxul?

I'm looking at doing a drop ceiling of sorts and want advice if it will be as effective as I anticipate.
Show More
Show Less
Ask Your Own Home Improvement Question
Answered in 57 minutes by:
7/29/2013
kruzrken
kruzrken, General Contractor
Category: Home Improvement
Satisfied Customers: 220
Experience: California licensed contractor
Verified

Hi, this is Ken,and I will hopefully be able to solve your problem, since I majored in audio engineering.

There are different techniques used for different purposes, for example music studios, annoying neighbors and busy streets, etc., and also for the type of construction.

Please tell me:

(1) The dimensions of the room, including ceiling height (without a dropped ceiling).

(2) Is the room a perfect rectangle with parallel walls?

(3) Wood/sheetrock construction?

(4) How many windows and doors, and their sizes?

(4) what is the source or the sound you are trying to squelch?

(5) In your own words, what are you trying to accomplish? Please be specific.

When I receive your reply, I will be able to help you.

Regards,

Ken

 

p.s. It is late now, so please expect a reply tomorrow.

Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

Room is kitchen about 12 X 12


 


Perfect rectangle



Desired sound reduction is almost 100% impact from above subfloor and joists


 


Trying to decouple the subfloor impact source from the lower floor ceiling


 


 


 

Hi, this is Ken again.

Sorry, I did not get a complete answer. Let's try one more time.

I'm going to bed now (really).

please be complete. Otherwise, I cannot help you.

Ken

Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

Those were the relevant answers to the questions you asked. Impact noise from above, need to decouple and dampen below.

I graduated with a degree in Electrical Engineering 42 years ago. I retired just 4 years ago. At that time, my consulting rate was $130 per hour. I have already spent 20 minutes trying to get answers from you in order to earn $15. I'm sorry, but I do not wish to spend any more time, since without complete information, I cannot give you any specific answers, and any answer I give might be the wrong one for your situation anyway. Thus, I have opted out of this question.

Please re-list your question and perhaps someone else might be willing to help you.

Sincerely,

Ken

Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

Yes, we're not building an acoustical orchesrta hall here, it just a matter of dampening and decoupling the upper level from the lower level. No involvement with windows, or room rectangular orientation. Thanks for having a look.

Martin
Martin, Electrical Engineer
Category: Home Improvement
Satisfied Customers: 4,971
Experience: Design, construct, fix and grow stuff around and in the home.
Verified
Hello. How much space do you have available to lose on that ceiling?
Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

It's 9 1/2 feet give or take for the ceiling hight. This When I did the clip and channel ceiling it came down not more than an additional 2 inches below the old plaster and lathe.


 


I'm thinking staggering new joists between the exiting but slightly lower than the orignials and not touching existing joists or subfloor above (but onlyt to the perimeter ballon framed walls) will effectively decouple. People who sell channel and clip though seem fixated on flanking noise and say clip/channel is superior.


 


My scenario would have perimeter connections to the structure instead of 40-50 clips direct to the joists where the impact occurs. And any impact in the field of the floor above would have to travel over to walls and plates down into the stud wall below, into the new joists, through the rock & green glue and then out into the room.


 


Seems like same or less money than clip and chanel for 10 2X10X14s which I could level independant of the above joists which was a huge pain in living room of this 1885 house with low points in the center of the joists, and other issues with settling.

This is a valid idea, if you still hear impact style of sound even after using roxul bat and sound isolation support materials. The only problem is a possible sagging of the ceiling in the middle if not enough tension is used (if all would be suspended to an horizontal wire). If you redo a whole framing it could be more rigid (that is why i asked if you have enough space). The beam could the sitting on rubber feet/pad.

If the problem is from impact sound, you can also work on it from the floor above. Using a cork mat or similar material to dampen it and prevent the sound to enter too strong in the joist. Ceramic and hardwood floor are really good to conduct sound. Note that sound can also come from vertical beam and dissipate from the wall.

Some sound like extreme bass need extremely thick sound insulation and are very hard to remove.
Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

I could go the route of using a rubber impact absorbing underlayment in the future but I have to wait until the vinyl floor is ready to be redone, it has a few more years.


 


I had another expert advise that 2X10s should be strong enough to span a 12-13 ft room and carry 2 layer of 1/2 drywall (that would be unsupported and a complete spanning). The existing joists carrying all the weight of the up stairs space are only 2X8s but they are the growth true 2 inch stuff from 1885. Would you think 2X10s woul dbe sufficient? The only other weight would be a ceiling fan or something similar, or If I went with 5/8 drywall.

2x10 are absolutely enough for that area. You could even use engineered joist as you could fit more sound insulating material between the triangles withing the joist (they use lot less wood also).

If you have any water pipe or drain going trough the area, make sure to make it easy to access them in the future.
Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

By engineered you mean the I beams made from particle wood, etc?


 


As far as access goes, I won't have direct access since this will be a rocked ceiling, the access will be limited to under the kitchen sink and in a linen closet.


 


Are you familiar with the clip and channel decoupling method used by many in this scenario and what are your thoughts on it vs mine (which should limit the noise to flanking which must travel a ways through surrounding structures to make it into the new ceiling?)

Engineered joist as in made from smaller wood part assembled in triangle with steel connection.

As for the access, do it like you want, i was just doing a friendly reminder :)

Yes i know the clip technique you mentioned. It work up to a certain extend as long as the impact of sound is not too strong. All the energy not absorbed will continue pass it. Your method is valid but a last resort solution as it involve more material and take more space from the room. Like i said it is a valid method and you can apply them both at once to really give it your best shot to solve the problem once and for all.
Ask Your Own Home Improvement Question
Customer reply replied 4 years ago

My numbers on the heavy duty RSIC rubber and metal clips and 20 guage hat channel is almost identical to 10-12 2X10s and the ease of leveling is what attacted me to this method. The clips are cool and everything but it killed me leveling the high and low spots in an old house.


 


I like the idea of putting drywall right on the wood as well.


What do you think about putting some strips of the rubber underlayment betwen the joist bottoms and the sheetrock? Not exactly clips but I can't see doing joists and the whole clip and channel system


 

Yes, that would work, as long as the sound can't directly go to the second ceiling easily.

If you want to do leveled things in an old house, a rotating laser level is very handy.
Martin
Martin, Electrical Engineer
Category: Home Improvement
Satisfied Customers: 4,971
Experience: Design, construct, fix and grow stuff around and in the home.
Verified
Martin and 87 other Home Improvement Specialists are ready to help you
Ask your own question now
Ask Martin Your Own Question
Martin
Martin
Martin, Electrical Engineer
Category: Home Improvement
Satisfied Customers: 4,971
4,971 Satisfied Customers
Experience: Design, construct, fix and grow stuff around and in the home.

Martin is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air.

JeanRiverhead, NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

< Previous | Next >

Meet the Experts:

Brian

Brian

Architect

2,153 satisfied customers

Licensed Architect- 17 years, L.E.E.D. AP

The Home Smithy

The Home Smithy

Home Builder

2,084 satisfied customers

#1 Home Improvement Expert 30+ years experience

Steve G.

Steve G.

Handyman

221 satisfied customers

VP of electronic repair company and home theater advisor.

StructuralEng

StructuralEng

Civil Engineer

14 satisfied customers

Licensed Structural Engineer

Eric M. Bright

Eric M. Bright

We Don't Comprehend the Word Can't!

1,734 satisfied customers

I've been been doing things for my clients that others have said cant be done for over a 1/4 Century

Phil

Phil

Mechanical Engineer

682 satisfied customers

Retired contractor, 51 years experience

Rich

Rich

Home Improvement Enthusiast

674 satisfied customers

Over 35 years construction and home maintenance experience

< Previous | Next >

Related Home Improvement Questions
Removed old laminate floor to replace it, when I picked up
removed old laminate floor to replace it, when I picked up moisture barrier it was wet like sweat. Had a plumber in to check if pipe under house were broken and everything is fine. Now floor is bare j… read more
canuck the pro
canuck the pro
251 satisfied customers
Two coworkers were arguing about clearing plugged lines
Two coworkers were arguing about clearing plugged lines today. The line contained fats, oils and grease. One coworker said you can't use steam because the plug prevents the steam from flowing. Since t… read more
canuck the pro
canuck the pro
251 satisfied customers
I'm looking to program a garage door opener replacement,
I'm looking to program a garage door opener replacement … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
Power went out on one circuit changed broken wall plug no
Power went out on one circuit changed broken wall plug no power unless I put the tester to the black wire and the ground … read more
David Bowden
David Bowden
Owner
473 satisfied customers
My thermador stove top is clicking and there is sparking to
My thermador stove top is clicking and there is sparking to the burner. The clicking goes away when I turn on the flame … read more
David Bowden
David Bowden
Owner
473 satisfied customers
We have two showers both with wands. When we use the master
We have two showers both with wands. When we use the master shower there is no problem the shower starts and shuts off properly. When someone is using the guest shower the shower in the master (which … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have an indoor/outdoor lemon tree. It has done great for
I have an indoor/outdoor lemon tree. It has done great for years and years. Since I live in Upstate NY, I keep it outside from late June- early Sept and then inside for the rest of the time. I have ha… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a whirlpool natural gas water heater 40gal model
I have a whirlpool natural gas water heater 40gal model number BFG2F4040T3NOV. The pilot light would not stay lit so I cleaned all around and that seemed to help until yesterday when the pressure rele… read more
David Bowden
David Bowden
Owner
473 satisfied customers
I recently stained floors in a master bedroom with an oil
I recently stained floors in a master bedroom with an oil based stain. There are so many imperfections, I.e brushstrokes, stain slightly heavier in certain areas, etc. the floors still feel pretty oil… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a 6 yr old California Pepper that lost a lot of
I have a 6 yr old California Pepper that lost a lot of leaves two years ago and an arborist told me that I may have been watering it too much. I cut way back and that stopped the problem While the tre… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I'm having trouble with my washer? It is not spinning so I
I'm having trouble with my washer? It is not spinning so I took my sheets out of the washer and it also still had water in it. … read more
David Bowden
David Bowden
Owner
473 satisfied customers
WE live in an old 3+story home. Many bricks from our chimney
WE live in an old 3+story home. Many bricks from our chimney fell off the chimney on Monday..My question, Is it safe to stay in the home in the extreme cold/weather? Our furnace is gas boiler in the b… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Just recently we went through a bit of a freeze here in
Hi Pearl - Just recently we went through a bit of a freeze here in central Texas. My wife and I are both from the NE, and was we always have, we ran a very small stream of water in each facet ( both b… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Kitchen faucet model ca 87000 leaking at the neck.I am
kitchen faucet model ca 87000 leaking at the neck.I am unable to remove faucet neck from top … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
One of the grandchildren was pushing buttons on the Sentry
One of the grandchildren was pushing buttons on the Sentry Safe and locked it up. The key is inside the safe. How do I get it open? Tried removing the button on front, but still cannot gt it to open … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
Is it a good time of the tear to sow grass seeds for a new
Is it a good time of the tear to sow grass seeds for a new lawn?I do not like sod for multiple reasons. I am currently readying my back yard for developing a lawn from scratch. See picture. Next..- ne… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I removed my chimney stack to clean it. One piece fits
I removed my chimney stack to clean it. One piece fits inside the other and they are stuck. I can't slide them apart so as to fit back onto the stack. … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
I trying to operate Sentry safe lock and the key pad. The
Good day,I trying to operate Sentry safe lock and the key pad. The electronic key pad doesn't work no more (no light no beeps). I've changed to new batteries several times. How can the the key pad ele… read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x