Adding sound deadening to vert doors?

bongko · 10-02-2021, 12:19 PM

So I'm interested in swapping out my base sound system (fronts only) and I was wondering whether I should bother putting in sound deadening material in the doors while they were pulled apart.
I have no intention of opening up the rear panels and would at most apply some material in the wheel wells.
Since I have a convertible would adding sound deadening to the doors and maybe the wheel wells even make a noticeable difference? I dont feel the cabin is noisy but since I'll be pulling the door panels I might as well ask for opinions. At least i could save the 100-200 in material cost if it wont do much.

TheSniper · 10-02-2021, 09:11 PM

I had it put in my doors and my trunk.

It definitely has made the 'cockpit' a lot quieter in relation to freeway noise and all that.

Not sure as for the sound of the system as I had the door and rear speakers swapped out too, so it was going to sound better regardless.

bongko · 10-02-2021, 09:52 PM

Ooo didnt even think about the trunk. Good idea

MarcoZandrini · 10-11-2021, 03:36 PM

It’s not a difficult DIY. I bought RoadKill off Amazon. I use paper for templates. Worked well.

instalher · 12-25-2021, 04:33 PM

one layer of dynamat on the inside skin of the door, then a layer of 1/8 inch closed cell foam, layer of dynamat on the outer skin of the door, and a layer of 1/4 inch closed cell foam. Made sure all holes are covered. Not sure i can hear any difference, especially with the top down.

hlm2c · 01-26-2022, 06:48 AM

Quote:

Originally Posted by instalher

one layer of dynamat on the inside skin of the door, then a layer of 1/4 inch closed cell foam, layer of dynamat on the outer skin of the door, and a layer of 1/4 inch closed cell foam. Made sure all holes are covered. Not sure i can hear any difference, especially with the top down.

instalher After you put in dynamat on the inside skin of the door, you were able to fit 1/4 inch closed cell foam on top, plus the original OEM vapor shield on top? You were able to sandwich it all together? Did it all fit with no issues after you put the door card on top of all that?

instalher · 01-29-2022, 02:28 PM

fit was perfect no issues.... sealed up tight like mary poppins!! one correction the foam is 1/8th not 1/4 sorry about that..

10-02-2021, 12:19 PM	#1
bongko Enlisted Member 9 Rep 45 Posts Drives: 2016 M235i F23 Join Date: Mar 2021 Location: 91007 iTrader: (0) Garage List 2016 BMW M235i [0.00]	Adding sound deadening to vert doors? So I'm interested in swapping out my base sound system (fronts only) and I was wondering whether I should bother putting in sound deadening material in the doors while they were pulled apart. I have no intention of opening up the rear panels and would at most apply some material in the wheel wells. Since I have a convertible would adding sound deadening to the doors and maybe the wheel wells even make a noticeable difference? I dont feel the cabin is noisy but since I'll be pulling the door panels I might as well ask for opinions. At least i could save the 100-200 in material cost if it wont do much.
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10-02-2021, 09:11 PM	#2
TheSniper Private 26 Rep 74 Posts Drives: M235i xDrive Join Date: Oct 2019 Location: Detroit iTrader: (0)	I had it put in my doors and my trunk. It definitely has made the 'cockpit' a lot quieter in relation to freeway noise and all that. Not sure as for the sound of the system as I had the door and rear speakers swapped out too, so it was going to sound better regardless. __________________ 2016 M235i xDrive Dinan Stage 4 Tune (Big turbo, exhaust, intercooler, etc) Dinan lowering springs, bump stops, front and rear sway bars.
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10-02-2021, 09:52 PM	#3
bongko Enlisted Member 9 Rep 45 Posts Drives: 2016 M235i F23 Join Date: Mar 2021 Location: 91007 iTrader: (0) Garage List 2016 BMW M235i [0.00]	Ooo didnt even think about the trunk. Good idea
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10-11-2021, 03:36 PM	#4
MarcoZandrini Major 444 Rep 1,264 Posts Drives: 2018 M240i Join Date: Jun 2017 Location: Virginia iTrader: (0)	It’s not a difficult DIY. I bought RoadKill off Amazon. I use paper for templates. Worked well.
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12-25-2021, 04:33 PM	#5
instalher 25cent millionaire 252 Rep 1,220 Posts Drives: 2020 m4 comp vert Join Date: May 2011 Location: saskatoon iTrader: (1) Garage List 2020 bmw [0.00] [9.00] [0.00] [9.50] 2018 bmw 230i xdrive [8.50]	one layer of dynamat on the inside skin of the door, then a layer of 1/8 inch closed cell foam, layer of dynamat on the outer skin of the door, and a layer of 1/4 inch closed cell foam. Made sure all holes are covered. Not sure i can hear any difference, especially with the top down. Attached Images Last edited by instalher; 01-29-2022 at 02:36 PM..
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01-29-2022, 02:28 PM	#7
instalher 25cent millionaire 252 Rep 1,220 Posts Drives: 2020 m4 comp vert Join Date: May 2011 Location: saskatoon iTrader: (1) Garage List 2020 bmw [0.00] [9.00] [0.00] [9.50] 2018 bmw 230i xdrive [8.50]	fit was perfect no issues.... sealed up tight like mary poppins!! one correction the foam is 1/8th not 1/4 sorry about that.. Last edited by instalher; 01-29-2022 at 02:36 PM..
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