Questions & answers about diagnosing & curing building noises, set#2.

From wind noise at chimneys to animal noises in the basement, a stunning range of noise complaints in and around buildings is given by InspectApedia's readers. These FAQs offer suggestions for fixing various nois complaints in buildings.

This article series includes catalogs of types of building noises & sounds, common sources for each of these noises, & methods of sound or noise control in buildings during construction or as a building retrofit.

FAQs on Tracking Down Noises & Sounds in Building Interiors-2

These discussions of finding and curing the source of noises at, in, or around buildings were posted originally at NOISE / SOUND DIAGNOSIS & CURE - a complete guide to diagnosing and fixing noise complaints. Be sure to see the suggestions found there for diagnosing and stopping aggravating building noises.

On 2021-11-30 by Inspectapedia Com Moderator

@m.,

good idea

On 2021-11-29 by m.

@Inspectapedia Com Moderator,

thanks for answering :)

It is somehow constant, or sometimes is louder, because it is more annoying sometimes.

It is problem when I stay longer in, it become more noticable. I remember that it appeared once and it didn't go away since.

I am not sure if that is me or something with building, but I still can't figure what.

Like some constant sound which is moving a little, I am not sure if it comes from down or up for example.

If someone is here for short time, it is not a problem, so they have to believe first ;)

I might look around on your website

On 2021-11-27 by Inspectapedia Com Moderator

@m.,

Thanks for the 400-500 Hz noise question; indeed we appreciate and welcome our Serbian readers and some have even provides us with translations of some InspectApedia articles into Serbian. - https://inspectapedia.com/aircond/klima_uredaja.php

I agree that even choosing the right name for an ongoing noise is tricky and people are not consistent: one persons hum is another person's drone, or whine.

My OPINION is that any low-frequency ongoing noise can be safely called a low pitched drone or hum, or low-frequency vibration.

The sources of those low-frequency noises, even when pretty constant, range widely and include traffic, gas or diesel motors (trucks idling in a garage), mechanical equipment, transformers, and even transmitted traffic noise from a more-distant source.

When we're having trouble tracking down a noise source or even knowing where to start my suggestions are

1. check to assure that other people hear the noise

or check with your doctor to rule out a health or neurological problem (if it's just you it could also be that you have no medical problem but have acute hearing ability)

2. keep a noise log

hat records time, use of equipment, weather, and other factors that may point to a source; search this very web page for NOISE LOG to see several forms in which we offer that printable document

SOUND LOG

On 2021-11-27 by m.

Hi,
I'm not from USA, I am from Europe (Serbia). I have constant sound in my flat on first floor. I hear about 400-500 Hz.

I have to filter it mentally but sometimes it annoys me, for example when I want to sleep, I use some sleeping music, but sometimes it is not enough.

My next wall neighbor doesn't hear this. I guess it is something below me, central heating perhaps, but not sure what? Below me is shop with apartment part, I think there are some alarms.

People say I am crazy but this is here all the time and maybe it is louder these days. How can I get any clue what is happening?

Once we turned off electricity so I think it is not problem, but maybe that I should repeat that once again. Problem is that is not so obvious but if you have to live here or spend more time it is not comfortable and can affect sleep. Like it is in whole flat

I would search here but how would that be described, "constant flat tone around 400-500 Hz"? Is it humming?
thanks

On 2021-11-18 by Inspectapedia Com Moderator

@Tim Mc,

I would not expect it to be possible to nail paneling "too tightly" to a stud wall nor for that nailing to explain the popping creaking noises you hear.

But it's possible that the siding butt joints or side-abutments were very tight - against one another or against other components and that now you're hearing thermal contraction movement noises.

see details at POPPING SNAPPING NOISE DIAGNOSIS https://inspectapedia.com/noise_diagnosis/Snapping-popping-noise-diagnosis.php

On 2021-11-18 by Tim Mc

Hi,
I live in Sacramento ,Ca. and just had new T-111 siding installed on my house in August and as of a week ago hear lound popping and creaking inside my house which was I never had before the install.

I did mention to the foreman of the installation company that some of the crew is hammering the paneling so forceful that some of my indoor pictures where falling off the walls in the house...

I now have loud popping and creaking during cold days and could this be the paneling nailed to tightly?

Thank you
Tim

On 2021-11-17 by Inspectapedia Com Moderator

@Wilson,

You have my sympathy as I know noises can be really disturbing.

You might try keeping a noise log and reviewing other suggestions above on this page. That can help your on-site noise consultant.

On 2021-11-16 by Wilson

Hi - I live in Brooklyn Heights, NY and for two weeks we have been dealing with a sound that could be described as buzzing, whistling, or mechanical screeching.

While it appears to come from one of the roofs of a neighboring building - these have been checked and all of the buildings have found nothing wrong.

Additionally, depending on where you are standing the source of the noise moves.

We were 100% certain that it was coming from above a scaffolding but once we got above the scaffolding - the sound appeared to come from the building across the street.

I haven't looked through all of the samples but would be EXTREMELY grateful if I could share some sound bites to see if anyone has thoughts on what could be causing this.

As its not coming from the buildings we live in, we are limited in our ability to turn things on and off ....

On 2021-11-04 by Inspectapedia Com Moderator

@Yihang,

Please help us out by posting your questions just once in one place - we have thousands of readers we try to serve- tripling our workload makes it hard for us.

You posted and we'll reply at https://inspectapedia.com/noise_diagnosis/Bang-Boom-Noise-Sources.php

On 2021-11-03 by Yihang

Hi, I lived in an apartment in Auckland Central for one year. Everything was fine before.

But 3 weeks ago I started to hear strange thudding/thumping noise almost every morning from about 10am to 1pm. Sometimes I will also hear the noise at 4pm.

The thudding noises seem to occur randomly throughout the time period, so two thumps, one is less louder and one is louder and then several minutes later another two thumps.

There is also another strange phenomenon is that, sometimes, within a very short time interval, say 30 seconds, there are about 5 thudding noises, like boom, boom, boom , boom, boom. It never happens at evening(but this is what I am afraid for).
What is actually going on?

I lived in the top floor of the apartment and the thudding noises sometimes seem to coming from the ceiling but other times seem to coming from the floor where my downstairs neighbour promised me so many times that they did not make any of such noises!

On 2021-10-22 by Inspectapedia Com Moderator

@Susan,

Plumbing systems (water supply and pumps) can also make the noise you describe.

I'd continue to localize the noise source by turning off various equipment and by checking the plumbing system for noise sources. You could also try partly closing some supply valves at fixtures or checking for pumps of any sort.

On 2021-10-22 by Susan

We moved into our house a few months ago. In the past week we have started hearing a loud motor sound, which you can hear throughout the house but it is loudest behind the wall near the water heater and furnace.

The weirdest thing is that the noise occurs at the SAME TIME every day: 1:20 AM It wakes us up and lasts for anywhere from 5 to 15 minutes and then stops.

Our HVAC system is turned off (nice fall weather where neither heat nor AC is needed.) We had friends staying with us and it woke them up too. We (and they) have recorded the sound.

It sounds sort of like a motorcycle or motorboat and varies in intensity while it lasts. No water or appliances are running at that time of night. We have no idea how to approach this problem - what type of expert to even call?

On 2021-09-28 by Inspectapedia Com Moderator

@Colin Daniel,

The article above list sources of hissing noises. Be sure to take a look.

This article will also give additional information:

HISSING NOISE PROBLEMS

https://inspectapedia.com/noise_diagnosis/Hissing_Noise_Diagnosis.php

On 2021-09-28 by Colin Daniel

What is the cause of a constant hissing in an apartment

On 2021-04-29 by Inspectapedia Com Moderator

@Doug,

My best advice is in the article above in the section titled

Find the Source of Building Noises by Keeping a Sound or Noise Event Log

where you will find links to approaches useful to pinpoint the source of an annoying noise.

Please take a look and then comment or ask further questions as needed.

On 2021-04-29 by Doug

We are experiencing an annoying low pulsating mechanical sound coming from the alley we think.

We live in downtown Vancouver, Canada. We think the sound is coming from a generator or intake fan, which are at the back of a hotel across the alley from us.

How we can be sure what the source of the noise is?

On 2021-04-17 by (mod) - intermittent rotational grinding noise

@Andy,

I understand that recurring noise can be very Disturbing and naturally we would just like a simple answer, but in fact some on-site diagnosis and perhaps keeping up a noise log are what's needed. Often the log can help pinpoint a noise source

The most-effective steps to tracking down a noise problem to its source are given above on this page - in more detail than I should repeat here. Please take a look, and also try the noise log described there.

On 2021-04-17 by Andy

For the last 3 months, there has been a new noise audible throughout my apartment and building. It is an intermittent rotational grinding noise, that reoccurs in the background all day and night every few hours at least, but lasting for only a minute or two at a time.

I’m the first floor apartment (above a basement) and it sounds like it’s coming from the ceiling. People on the third floor hear it as well but we cannot identify the source.

On 2021-03-31 by (mod) - humming type vibration in the night

@Pavlaki, you will want to identify the probable noise source by learning what equipment is running when you hear the sound, and you'll look at the noise transmission path when the sound is being generated by learning what physical materials either touch or broadcast noise to your bedroom.

More-thorough noise diagnosis and cure suggestions and steps to follow start on the page above.

On 2021-03-31 by Pavlaki

At certain times in recent years my upstairs bedroom has had a humming type vibration in the night which makes it impossible to sleep.

From the first occasion I found that the vibration was coming from the wall of my neighbour's house, and seems to travel through my back wall and an internal wall where my bed head is.

I can remember the first time it happened, having had no problem in the previous 10 years, so I wonder if it is as a result of some kind of installation or alteration. I have often felt it was associated with their boiler, which is upstairs.

My previous neighbours seemed to resolve the problem so the following 6 years were fine. The house has recently been bought and refurbished , and the problem came back with a vengeance over the weekend.

I contacted the owner and discussed it. I also contacted the former residents who said they resolved the problem by bleeding the radiators, so I informed the new owner and he sent plumbers/heating engineers to look at the system and boiler yesterday, and that night the humming started again, lasting much longer.

The wall also contains a disused chimney breast on either side, and I wonder if that may have a link. There was no wind last night so I have ruled that out. Any advice on how to go forward?

On 2021-02-22 by (mod) - help in finding the noise in my community.

A directional decibel meter might help.

On 2021-02-21 by Norma L Branch

I sure could use some help in finding the noise in my community.
I live in a 55plus village. There seems to be, not all of the time, but most in afternoon and night time, that someone is playing a radio and letting it play and play

. I do have very good hearing and this is annoying. I have tried to go out when I hear the sound, but since we live around major streets, it is hard to detect.
Please let me know if you any suggestions?

On 2021-01-19 by (mod) - periodic alarm-like (in terms of frequency) but more of a mechanical sound

Anon

NOISE SOURCE LOCATION - LOG FILES

may help you out; let me know.

On 2021-01-19 by anonymous - very disturbing sound

Hi,
I have been experiencing a very disturbing sound past 6 months and the landlord couldn't find out the source.

he sound is very periodic and it's alarm-like (in terms of frequency) but more of a mechanical sound maybe (landlord says it;s like a belt circling around a metal). They have renewed the water tanks, have fixed the fan up on the roof but it didn't go away.

Recently, an electrician came and switched off everything in the building but still the sound didn't go away.

If that helps it's a 4-level building and I'm on the 2nd floor. There is a dollar store under my apartment (I don't know if it could be the source of the sound). I would appreciate if you could give me your opinion. Thank you very much!

 

15 Nov 2017 (mod) said: - check with your doctor about noise complaints that only you can hear

Betty,

When no one knows what you're talking about regarding a building noise complaint, the place to start is with your doctor. There are several medical conditions that can produce very upsetting noise that sounds like a variety of things: music, talking, TVs, radios, talking, shouting.
flag like reply

15 Nov 2017 Betty said: I moved but noises are still bothering me and people don't believe me

Hello,I just mved again. From one high rise to another.Guess what the sound is here to. Now people look at me strange when I tell them,but there is nothing funny about this. I lose sleep every night.The building gets this like mumbling talking TV running but it is not.

It is very agravating it gets louder late at night.No one knows what I am talking about.I have ear plugs in and 2 lrg oreck air cleaners running that will not drown it out what could it be help please,this noise is like groaning in a way thanks betty

(Sept 7, 2017) Carl said: update on steps to isolate pipe vibration noise

Thank you all for your comments and help

Update - I was just told by apartment maintenance who the manager has tasked to do the work, will indent and dog-tail soundboard in between two vertical studs the AC tubing runs vertical up the wall and cover with very thin sheetrock.

This does not cover where the tubing actually originates at the bottom of the bedroom wall between the two vertical studs immediately to the right of intended installation of sound board.

This does nothing to isolate the vibration of the copper tubing from the outside compressor and apparently will not seal outside "hole" created by last week's "pulling of tubing from the brick wall" that has exposed copper tubing.

I'm perplexed why the apartment manager used her personal credit card to buy the boards and sheetrock instead of the apartment maintenance funds, especially since this is only the 5th day into this month's billing! Something sounds fishy.

Manager refuses to have AC company do the work that screwed it up to begin with. Once again, it should have been fixed by Oasis last summer under new construction warranty but the manager chose to blow me off several times in person and ignore my emails with sound recordings of the bedroom wall noise.

I do not expect this to fix the problem and further prolong the noises in the bedroom wall and the expense to fix it correctly up to code.

(Sept 3, 2017) Carl said:

I totally agree with you but the management doesn't really care! Neither does the Oasis AC company. One of their employees last summer said the condenser has no way of causing vibrating in line. Then when I confronted him that he was full of it, he admitted it was the cause but was too afraid to tell his boss and management the compressor and lines in wall was problem.

He was fired about a week later.
I think you and I both know these people throw love together for monbey, not service nor stand behind their work and the complex manager doesn't care to really pay the money to do correct fix. Apparently, she isn't honest and more so.

(Sept 2, 2017) (mod) said: - refrigerant tubing in contact with any sharp or abrasive edge combined with vibration is likely to eventually lead to a failure.

Carl,

I agree that refrigerant tubing in contact with any sharp or abrasive edge combined with vibration is likely to eventually lead to a failure.

About pulling tubing out of a wall, if that was done carelessly it could kink tubing left in the wall, leading to a new operational problem -that's speculative of course since I have no view of the situation.

The air handling you describe sounds jury-rigged to me too, which raises question about who, with knowledge, is designing, installing, and maintaining the system. Mistakes are most-likely to mean higher operating and repair costs, and possibly inadequate heating or cooling. I suppose there could be some safety concerns as well.

(Sept 2, 2017) Carl said:

Thank you for your apparent qualified knowledgeable response. I told my apartment manager your concern about a new AC compressor creating so much copper pipe vibration and concern the lines would eventually pop.

Apparently, the response is to ignore the true source of the vibration in the tubing from the compressor and concentrate on only cutting the wall open more, stuff fiberglass insulation on both sides of the tubing in the wall, then cover with thin sheet of acoustic board from Home Depot.

Then place thin sheet of sheetrock over the acoustic board, texture and paint the wall. Obviously, the vibration of the copper tubing will continue, even if miraculously this process reduces or muffles the clanking, rattling of tubing in the wall. Today I looked outside where the tubing enter the outside brick into my bedroom wall and evidently Oasis pulled all of the AC tubing outside and few inches on both compressor hole inlets into my bedroom wall.

The result is exposing liquid Freon line copper tubing to touch the other metal flashing like the first one did when they first cut into the wall and already covered up by replacing the sheetrock a few days ago. They also pulled out gaping yellow insulating foam surrounding the outside hole inlet the tubing leads into my bedroom wall. A very sloppy job.

The Oasis supervisor that apparently did this was the same one that last summer personally heard the noises in my bedroom wall and said it was originating from the outside compressor and someone (in his crew I guess) screwed up the installation. Evidently he didn't inspect the work at the time of construction early last year. However, he did nothing at that time but pull the copper tubing from outside brick wall just like he did yesterday. Obviously, that didn't permanently fix the noise problem inside the wall.

In addition, yesterday, I informed Oasis supervisor when I moved in I discovered a removable panel atop the inside central heat and air unit was removed leaving a square foot hole in the air duct to the ceiling that prevented air to circulate throughout my apartment. I also told him I discovered no air filter had ben put in the inside unit and the complex "stole" one from an unoccupied unit. Yesterday, I discovered my neighbors inside heat and air unit also had the square foot panel off the ductwork and lying next to the unit, same as mine.

This convinces me Oasis does shoddy work that does not comply with code, doesn't do a thorough job inspecting their employees work, and extremely unprofessional and teetering on unknowledgeable of professional work. They evidently also, along with manager,don't care to correct maintenance deficiency of proper central air conditioning installation or stand behind their work for customer satisfaction.

(Aug 31, 2017) (mod) said: - noise traced to refrigerant tubing in a wall

Carl

First, good work to have found the noise problem. I agree that it sounds as if the tubing wasn't well-installed, as it shouldn't be vibrating nor making noise in the wall.

I'm not happy with pushing the tubing snug against an outer brick wall: that risks corrosion or vibration wear and leaks in the tubing.
I'd have wanted it secured and isolated from both the exterior and interior wall surfaces. Foam insulation would have been perfect for that application once the tubing was properly positioned.

I'd also want a look at why there is so much vibration in the first place. It's odd for a compressor/condenser unit to transmit such troublesome vibration noise into a building via the refrigerant lines. Usually there is slack and perhaps a loop in the line near the compressor/condenser specifically to permit a little movement without ripping open the tubing connections.

I can't comment on what's normal noise level, in part because I can't hear it and in part because we have no objective data such as measurements made using a dB meter.

I'd warn the responsible management that the apparent-repair that was done is likely to cause more expensive damage by vibration, wear, corrosion, and leaks out of the refrigerant.

And I'd look at obtaining some objective noise data using actual measurements.

When you have some noise level measurements made at the equipment, at the wall, and in the occupied space, you can compare those with some of the typical noise levels found at SOUND CONTROL in BUILDINGS inspectapedia.com/BestPractices/Sound_Control_in_Buildings.php
where we catalog various ways to control noise levels in buildings.

But before doing anything to "control" noise transmission you want to know that the equipment is working properly and its refrigerant piping is properly secured.

(Aug 31, 2017) Carl said:

The noise is coming from the Air Conditioner tubing inside the bedroom wall that is an exterior wall. The tubing is coming from outside compressor for apartments that feed through a metal flashing hole into my bedroom wall and the lines run up the wall to 2nd and 3rd floor apartments (not my apartment).

The tubing is loosely snaked inside the wall and not anchored to the studs by vibration absorbing clamps.
The apartment complex's AC contractor, Oasis, cut 4 square foot holes in my bedroom sheetrock and pushed the tubing against the outer brick wall and shoved weather insulation between my sheetrock wall and the tubing.

The also did a "V" cut in the flashing tubing where the copper tubing from the compressor was hitting the flashing hole that the AC lines enter the wall from the compressor. The noise reduced for 7 days and returned worse than before work.

Bottom line, I've spoken to AC people and they say the contractor did not properly install the lines inside the wall correctly. That is, the did not use vibration absorbing clamps to attached the tubing to the studs to prevent the vibration in the tube from the compressor to clang and rattle inside my bedroom wall.

What suggestions do you have if the manager claims the noise is normal and wont do anything using a reputable AC company to correctly fix the lines?

(Aug 30, 2017) (mod) said: - At the outside compressor/condenser, a clanking sound can be a failing compressor motor,

Cark

At the outside compressor/condenser, a clanking sound can be a failing compressor motor, provided you've ruled out simply loose parts.

Please see our discussion of CLANKING NOISES in HVAC SYSTEMS
at
inspectapedia.com/noise_diagnosis/HVAC_Noise_Descriptions_2.php#Clank
and let me know if that's incomplete or if it leaves you with more questions.

(Aug 30, 2017) Carl said: What causes wall noise (clanking/rattling) when outside AC compressor is running?

What causes wall noise (clanking/rattling) when outside AC compressor is running? What is Fix Compressor is 1 1/2 years old but noise when I moved into apartment complex about 1 1/2 years ago. Apartment building had just been built new.

Manager says normal noise. It isn't it is in bedroom wall prevents sleep made recordings and emailed to manager. Opened 1 foot squares in wall and pushed loose AC tubing against outside wall in wall and stuffed weather insulation, did "V" cut cut where tubing metal flashing collar around tubing in wall that opens to outside brick wall to outside compressor.

Sound still in wall and manager claims nothing else can do. Bologna I am only renter with this noise in wall and last summer supervisor over AC company that installed new construction hear noise in wall & said someone screwed up tubing installation in wall but didn't fix while under warranty and manager refused to take action at that time.

This is 2nd summer of noise in wall. I have Tinnitus from Vietnam era concussion explosions and this is driving me nuts.Thanks

(June 2, 2017) (mod) said: - high pitch squeal bathroom faucet or toilet

Cheryl,

The noise you describe is one I've experienced as well. It's an effect of the velocity through particular segments of pipes or fittings that sets up what amounts to a resonant vibration.

Changing the water pressure or flow rate even slightly can make the noise come or go. You could try slightly closing the main water supply valve for the home, adjust the home pressure regulator, as well as checking for and cleaning faucet strainers and shower heads.

(June 1, 2017) Cheryl said:

1981 manufactored home. high pitch squeal bathroom faucet or toilet. Turned faucet on noise stopped, turned off quickly noise started, turned water on noise stopped again.

While turning the water off slowly the noise starts again when 1/2 way off. The toilet and sink are next to each other. Father says when he jiggled the tank on toilet the noise stopped also

(Mar 20, 2017) (mod) said: -

Perhaps, I don't know enough of your situation to have an opinion; there are various ways that sound is transmitted between building floors such as by the HVAC system, ductwork, piping.

Before someone can specify a solution they'll need to identify the sound source as well as its transmission path- that's on-site work for sure.

(Mar 20, 2017) Pat Wright said:

Our apartment is in the first level of a new building. Yesterday we were disturbed by noise that sounded as if it was from the apartment above (2nd).

However, the noise emanated from the 3rd and last level. The roof for our block of appartments is the terrace for the apartment on the 3rd level. Could this be the reason the noise is amplified? Is there a solution?

(Mar 3, 2017) Anonymous said:

ST

Before suggesting a "fix" we need to know the source of the sound - perhaps if you search InspectApedia for BANGING PIPES you'll see a common cause.

(Mar 3, 2017) ST said:

Hi,

My condo is 20 years old. There are 192 units in my block.
We have been hearing knocking sound at certain time of the day and night.

It is especially loud and clear at night. In recent days it has become so bad that
I counted the knock 50 times at certain time of the night.

Our sleep is deeply affected.
Where can we get help.
My country is sunny throughout the year. Thanks.

(Dec 23, 2016) (mod) said: - what to do with a noise occurrence time log

Natalie: thanks for an excellent question: what to do with a noise occurrence time log:

You might ask your building maintenance staff what heating, cooling, electrical, or plumbing systems, components, or individual machines or appliances are working at those times.

Look also at what else is happening at the times the noise is heard, such as

• presence or absence of sunlight on parts of the building
• changes in temperatures indoors or outdoors - heating or cooling down

Those two are examples of temperature changes that can relate to thermal expansion or contraction of materials that can make sounds

(Dec 23, 2016) Natalie said:

Hi, just moved into a small condo. 21 units. A few owners complain of hearing clicking noises at certain times of the day.

Once we have a noise time log. Who do we consult to investigate whether this is heating, plumbing, concrete or whatever? Bldg is 14 yrs old.Thanks!

Want to Buy a dB meter

This discussion moved to DECIBEL METER CHOICES SOURCES

...

Continue reading at NOISE / SOUND DIAGNOSIS & CURE - topic home, for a complete guide to diagnosing and fixing noise complaints, or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

Or see NOISE / SOUND DIAGNOSTIC FAQs-3 - more recent questions & answers about finding and curing the source of building or house noises

Or see these

Recommended Articles

• ALPHABETICAL LIST OF NOISES by SOURCE or SOUND TYPE
• NOISE / SOUND DIAGNOSIS & CURE - home
• NOISE SOURCE LOCATION - LOG FILES
• SOUND CONTROL in BUILDINGS - home

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NOISE / SOUND DIAGNOSTIC FAQs-2 at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

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INDEX to RELATED ARTICLES: ARTICLE INDEX to BUILDING NOISE DIAGNOSIS

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