Author Topic: Acoustic bedroom door that block sound?  (Read 1238 times)

Offline deadrick

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Acoustic bedroom door that block sound?
« on: May 05, 2019, 10:46 »
Hi all, I'm setting my HT to my living room, now thinking of changing the standard hdb bedroom door to those soundblock/soundproof door to minimize soundlead from living room to bedroom.

Can't seem to find much info regarding soundproof hdb door here.

Has anyone fitted before?
How effective will it be? Can ppl still slp in their room after I upgrade to acoustic soundblock door?
Any lobang to intro? If can't share here can pm.
What price to expect? I'm changing all 3 bedroom doors.
Thank you!

Offline winwinc81

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Re: Acoustic bedroom door that block sound?
« Reply #1 on: May 05, 2019, 10:52 »
hmmm... use rubber strip to stick at the perimeter. Blocks out the sound of kids next door crying, and neighbors bird chirping kekeke

Offline wechnivag

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Re: Acoustic bedroom door that block sound?
« Reply #2 on: May 05, 2019, 11:03 »
Bryan or others have replaced doors  before. Basically the door panels itself needs to block the sound transmission via mechanical conduction.

There are a few different approaches. You need mass to stop sound, especially low frequency. Some use a solid wood door. Noise Stop SG has a hollow door filled with 200kg/m3 rockwool.
Theoretically, I would like some constrained layer damping effect in the door panel. So maybe a sandwich construction of solid marine ply with mass loaded vinyl sheet inside, and green glue for damping. This the diyer in me talking..

The door panel aside, the greatest sound leakage is actually under the door through the bottom gap. A mechanical drop seal at the bottom is a must. So are batwing seals all around the sides.

Doors come with different STC  ratings . A  STC 40 door theoretically cuts the sound by 40dB, roughly.

My HT room, I didn't change the door. Just tacked on a spare duvet on the inside of the door. Batwing seals all around, installed a drop seal at the bottom. I think at least 35db + STC. You can barely hear a person on the other side of the door speaking in normal voice. Normal HT average 80db, after the door is below ambient noise levels in the living room of 50+db.

Cheers!

www.noisestopsystems.sg/products_acoustic_soundproof_doors_asia_singapore_buy_products.php




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Offline winwinc81

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Re: Acoustic bedroom door that block sound?
« Reply #3 on: May 05, 2019, 11:08 »
Bryan or others have replaced doors  before. Basically the door panels itself needs to block the sound transmission via mechanical conduction.

There are a few different approaches. You need mass to stop sound, especially low frequency. Some use a solid wood door. Noise Stop SG has a hollow door filled with 200kg/m3 rockwool.
Theoretically, I would like some constrained layer damping effect in the door panel. So maybe a sandwich construction of solid marine ply with mass loaded vinyl sheet inside, and green glue for damping. This the diyer in me talking..

The door panel aside, the greatest sound leakage is actually under the door through the bottom gap. A mechanical drop seal at the bottom is a must. So are batwing seals all around the sides.

Doors come with different STC  ratings . A  STC 40 door theoretically cuts the sound by 40dB, roughly.

My HT room, I didn't change the door. Just tacked on a spare duvet on the inside of the door. Batwing seals all around, installed a drop seal at the bottom. I think at least 35db + STC. You can barely hear a person on the other side of the door speaking in normal voice. Normal HT average 80db, after the door is below ambient noise levels in the living room of 50+db.

Cheers!

www.noisestopsystems.sg/products_acoustic_soundproof_doors_asia_singapore_buy_products.php




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Wow! Thanks for sharing!! So nice of you! Kekeke

Offline Jag

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Re: Acoustic bedroom door that block sound?
« Reply #4 on: May 05, 2019, 14:50 »
This what I did:

1) Replace door with a mass loaded door. This is not a normal solid wooded door. Knocking on it produces very little sound. Install a recess drop seal into the door.
2) Bat wings on 2 sides and the top of the door frame. Get from Lorient. Google for this name you will find them in Kallang and more details.
3) Dropseals at the bottom of the door to seal gaps between door and floor. Install both recessed and external drop seal for double isolation.


You only need 1 aperture for sound to leak thru. Like wechivag mention, I get about 30-40dB improvement with this.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #5 on: May 05, 2019, 15:02 »
Bryan or others have replaced doors  before. Basically the door panels itself needs to block the sound transmission via mechanical conduction.

There are a few different approaches. You need mass to stop sound, especially low frequency. Some use a solid wood door. Noise Stop SG has a hollow door filled with 200kg/m3 rockwool.
Theoretically, I would like some constrained layer damping effect in the door panel. So maybe a sandwich construction of solid marine ply with mass loaded vinyl sheet inside, and green glue for damping. This the diyer in me talking..

The door panel aside, the greatest sound leakage is actually under the door through the bottom gap. A mechanical drop seal at the bottom is a must. So are batwing seals all around the sides.

Doors come with different STC  ratings . A  STC 40 door theoretically cuts the sound by 40dB, roughly.

My HT room, I didn't change the door. Just tacked on a spare duvet on the inside of the door. Batwing seals all around, installed a drop seal at the bottom. I think at least 35db + STC. You can barely hear a person on the other side of the door speaking in normal voice. Normal HT average 80db, after the door is below ambient noise levels in the living room of 50+db.

Cheers!

www.noisestopsystems.sg/products_acoustic_soundproof_doors_asia_singapore_buy_products.php




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thanks for the detailed info.

noise stop has some interesting door, sent them a message and hope they reply. had hard time getting them to quote anything before.

So i should look at the STC rating for door.

i came across this:
http://www.door.sg/acoustic-door.html
Not sure are they good in noise blocking, the photo show rockwool inside the door, is this more effective than all wood door?
Somehow google doesnt show much supplier for acoustic or noise block door, maybe will call them up for viewing and understanding.

where did you get the batwing seal? locally like cannot find.


Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #6 on: May 05, 2019, 15:11 »
This what I did:

1) Replace door with a mass loaded door. This is not a normal solid wooded door. Knocking on it produces very little sound. Install a recess drop seal into the door.
2) Bat wings on 2 sides and the top of the door frame. Get from Lorient. Google for this name you will find them in Kallang and more details.
3) Dropseals at the bottom of the door to seal gaps between door and floor. Install both recessed and external drop seal for double isolation.


You only need 1 aperture for sound to leak thru. Like wechivag mention, I get about 30-40dB improvement with this.

thanks for the good tips.
any lobang or search term for these kind of mass loaded door locally?

Do the seller supply the recess dropseal? or we buy and get them to install? doesnt look like something i can do. but the 3) external dropseal i can do myself, as its on the outside.
 
for now, will test out the batwing sealing first.

Offline Jag

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Re: Acoustic bedroom door that block sound?
« Reply #7 on: May 05, 2019, 15:18 »
https://www.soundzipper.com/about-us/

The can do it all for you. I engaged them 4yrs ago.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline wechnivag

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Re: Acoustic bedroom door that block sound?
« Reply #8 on: May 05, 2019, 17:10 »
Wah, interesting company! Looks like they are the real deal, can provide design consultancy on all aspects of a dedicated HT construction.

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Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #9 on: May 06, 2019, 10:03 »
Received a quote for acoustic door $3500 for 1 bedroom door from some company. Is this kind of pricing reasonable for door?

I wasn't expecting this price man.

Offline wizardofoz

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Re: Acoustic bedroom door that block sound?
« Reply #10 on: May 06, 2019, 10:55 »
These types of doors are typically used for music studios so expect to pay premium for quality otherwise just DIY with rubber seals
« Last Edit: May 06, 2019, 13:56 by wizardofoz »
I have a pile of stuff that pushes out squiggly waveforms from smaller squiggly waveforms that sometimes come from 1's and 0's.
It's wonderful to behold as long as you don't let the magic smoke out.

Life is short! Enjoy the music while it plays, when it stops, there might be a chair for you...or  maybe not.

Offline ralfale

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Offline Count

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Re: Acoustic bedroom door that block sound?
« Reply #12 on: May 06, 2019, 17:11 »
Received a quote for acoustic door $3500 for 1 bedroom door from some company. Is this kind of pricing reasonable for door?

I wasn't expecting this price man.

3.5k is about the market price for a professionally fabricated and installed acoustic door. If you want cheaper, can get a normal contractor to install a solid core door and you can install your own seals onto the door.

Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #13 on: May 14, 2019, 23:06 »
just an update what i have done,
install batwing seal + bottom seal(those rubber cheap kind) already helped alot with my standard HDB door, i think semi solid or almost full solid. 

Next upgrade will likely just change to nice looking laminate solid wood door, with inbuild drop seal.

anyway, the con is opening the door require more strength, to push or pull.
is it common for you guys?

Offline Jag

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Re: Acoustic bedroom door that block sound?
« Reply #14 on: May 15, 2019, 07:38 »
After treatment, the door will be harder to open because of the seals AND vacuum effect of the room. Normal to be more difficult to open/close door fully.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline sdds

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Re: Acoustic bedroom door that block sound?
« Reply #15 on: May 15, 2019, 09:02 »
I have change 2 of my bedroom doors to solid wood doors with bulit in drop down seal and bar wings @ $$750 a piece from Goodwill Enterprise . The closing and opening as per normal .

Offline wcseow

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Re: Acoustic bedroom door that block sound?
« Reply #16 on: May 15, 2019, 09:30 »
I have change 2 of my bedroom doors to solid wood doors with bulit in drop down seal and bar wings @ $$750 a piece from Goodwill Enterprise . The closing and opening as per normal .

The seal is only dropped when the door is closed, right?

Offline sdds

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Re: Acoustic bedroom door that block sound?
« Reply #17 on: May 15, 2019, 09:37 »
yes , the seal will drop when close .

Offline wechnivag

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Re: Acoustic bedroom door that block sound?
« Reply #18 on: May 15, 2019, 10:09 »
just an update what i have done,
install batwing seal + bottom seal(those rubber cheap kind) already helped alot with my standard HDB door, i think semi solid or almost full solid. 

Next upgrade will likely just change to nice looking laminate solid wood door, with inbuild drop seal.

anyway, the con is opening the door require more strength, to push or pull.
is it common for you guys?
Batwing seals typically do not cause excessive difficulty in closing the door. Much less than the foam sealing strips commonly used.

I suspect the bottom seal is causing more friction as it rubbing on the floor?

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Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #19 on: May 15, 2019, 17:10 »
Hmmm, goodwill acoustic got the package to install drop seal + perimeter seal. Actually price is reasonable if you already have the door you like.
My is hdb door, never like the design. Lol.

My bottom seal definitely not the culprit as I using those rubber wiper kind, i already felt the door opening harder before fitting the bottom seal.

Closing is fine, just need to swing harder then the momentum will help it.

But opening, after your turn the handle, that is the part require abit of force to swing open. not really that bad but definitely can feel some friction.

Don't think got to do with vacuum effect if the windows are open in the room.

Probably friction from the door and the seal. But if can achieve a smooth effortless opening and closing will be best. Gonna test again with the remaining doors.. Lol.

Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #20 on: May 15, 2019, 17:14 »
I have change 2 of my bedroom doors to solid wood doors with bulit in drop down seal and bar wings @ $$750 a piece from Goodwill Enterprise . The closing and opening as per normal .

Anyway, did you compare their bedroom solid wood door vs other company solid doors?

Not sure if all laminated solid wood door are all same?
I was recommended this door company, imperial door, hdb bedroom that feels like hotel door. Will drop by their shop when I free to see see.

Offline sdds

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Re: Acoustic bedroom door that block sound?
« Reply #21 on: May 15, 2019, 18:29 »
Went searching online for doors , in the end went for this due to some reviews .Quality is consider good after 1 year of usage .
Can drop by to my place if you want to take a look at the real door .Thanks

Offline deadrick

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Re: Acoustic bedroom door that block sound?
« Reply #22 on: May 15, 2019, 19:14 »
where do you stay sir?

Offline sdds

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Re: Acoustic bedroom door that block sound?
« Reply #23 on: May 15, 2019, 19:15 »
Jurong west , next to jurong point

Offline wechnivag

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Re: Acoustic bedroom door that block sound?
« Reply #24 on: May 15, 2019, 20:39 »
Anyway, did you compare their bedroom solid wood door vs other company solid doors?

Not sure if all laminated solid wood door are all same?
I was recommended this door company, imperial door, hdb bedroom that feels like hotel door. Will drop by their shop when I free to see see.
One quick/dirty way of checking the door is the good old knuckle rap test. As Jag shared, his door has laminated mass loaded vinyl, very heavy and also damped via CLD mechanism (constrained layer damping). This will maximise sound loss, minimise transmission through the door.

A solid door will still transmit some sound via conduction through the door panel, but the mass of the solid wood blocks some sound . A hollow or thin Plywood door is probably the least effective in blocking sound. A knuckle rap with a calibrated ear may be able to differentiate between the doors.. Haha.

This is choosing between different types or 'normal' doors. Custom acoustic doors are much more expensive and  better specced.



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