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Sound deadening, sound proofing - which have you done and what are your results?

Pstyckiewicz

Pstyckiewicz

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Used some sound deadening stuff off Amazon.


And some ceramic fiber for the dog house area.


Also used some 4 way stretch carpet on top of everything.
 
F

Foxclub83

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Texas
Pstyckiewicz said:
Also for the tunnel I used 3/4 plywood wrapped it and glued down the 4 way stretch carpet. The hole piece is held down with bolts into nutserts and the top of the bolt is capped off to give it a nice finish.
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Nice work. Great ideas. What about drainage? Any issues or did you make cuts at the drainage slots?
 
thoner7

thoner7

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4 way stretch carpet? Never knew that existed.

Where’d you get it/what brand? Is it self adhesive or did you use a spray?
 
Pstyckiewicz

Pstyckiewicz

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So the carpet is called underfelt. It’s also called 4 way stretch. It is not to bad to work with. They use it a lot in camper van stuff. It is glued down. I used 3m spray glue. Spray the surface then spray the carpet and stick them together.

 
thoner7

thoner7

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Pstyckiewicz said:
So drainage I just covered it up. It’s water tight from the rain. I used a lot of seam sealer. I have the PlanB top and doors.
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if that carpeting durable? Or would it rip if there’s a have bag thrown on it for example


my top and doors are good now too from rain, but I still get some water in from around the snorkel and windshield washer bottle areas in the front driver and passenger footwell. And a little around the rear glass at the rubber weather strip
 
H

Hummer Guy

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United States Louisiana
Pstyckiewicz said:
Used some sound deadening stuff off Amazon.


And some ceramic fiber for the dog house area.


Also used some 4 way stretch carpet on top of everything.
Click to expand...
Did the sound deadening make a big difference? I installed what I thought was sound deadening from the advertisement, but it really was just insulation for hit, its way too light to be a sound deadener. I don't want to rip it out so I may just do the sound deadening in the firewall.

I use some actual sound deadener in the m35a2 and it made a difference but was worried it won't in the humvee since the engine sits so close to the inside of the vehicle
 
thoner7

thoner7

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Hummer Guy said:
Did the sound deadening make a big difference? I installed what I thought was sound deadening from the advertisement, but it really was just insulation for hit, its way too light to be a sound deadener. I don't want to rip it out so I may just do the sound deadening in the firewall.

I use some actual sound deadener in the m35a2 and it made a difference but was worried it won't in the humvee since the engine sits so close to the inside of the vehicle
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I’m curious, what is your “actual sound deadener”
 
H

Hummer Guy

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United States Louisiana
thoner7 said:
I’m curious, what is your “actual sound deadener”
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Amazon.com: Siless 80 mil (2mm) 36 sqft (3.4 sqm) Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (36 sqft) : Automotive



This one was the stuff I thought was sound deadener: Amazon.com: Abahub 394 mil 16 sqft Car Hood Insulation Pad Auto Sound Deadener Door Dampener Deadening Mat Heat / Cool Liner, Self-Adhesive Closed Cell Material (PE Foam Sound Deadener) 59"x39" : Automotive
 
Pstyckiewicz

Pstyckiewicz

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Massachusetts
My truck is still loud haha but definitely a lot less. Keeps the kids quiet in the back or at least I can’t hear them.
Without taking the body off the frame there is only so much you can do.
 
thoner7

thoner7

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For those that care I downloaded a free app on my phone - dB meter - to record my decibels before and after the sound proofing doing. I have an 1165a1 hard top roof and aftermarket fiberglass doors.

highway speed -60-70mph- 90 dB
Country roads, take me home -35-45 mph - 85 dB
Idle - 76 dB

for reference my f150 is 68 dB going 80 on the highway.

I have only completed the passenger side floor so I can’t really say how much it’s worked.
 
Thunderbirds

Thunderbirds

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Northern Black Hills South Dakota
That’s probably the best way to figure out effectiveness. I think I’ll do the same thing. Possibly from head height of passenger and driver side as that is where I keep my ears usually, as well as finding the loudest areas such as tunnel, foot well areas, and others…

Will post soon as I record them. Great idea.
 
Mogman

Mogman

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thoner7 said:
For those that care I downloaded a free app on my phone - dB meter - to record my decibels before and after the sound proofing doing. I have an 1165a1 hard top roof and aftermarket fiberglass doors.

highway speed -60-70mph- 90 dB
Country roads, take me home -35-45 mph - 85 dB
Idle - 76 dB

for reference my f150 is 68 dB going 80 on the highway.

I have only completed the passenger side floor so I can’t really say how much it’s worked.
Click to expand...
There is no such thing as a free app. :eek:
 
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