Recs on sound deadening? Got a 71 suburban (3 door) as a new toy/project and want to quieten it down some.

Focus on that long roof. Most noise is coming from there

I've had good luck with this product. Easy to cut, bend and shape around uneven surfaces. I used it for sound deadening in doors.

https://www.amazon.com/dp/B01KZ5X7KO?ref=ppx_pop_mob_ap_share

I used one of the generic Amazon products similar to the one suggested on my high top Express camper van and it definitely helped with road noise, but the wind noise is still somewhat loud. Only so much you can do when trying to push a giant brick at highway speeds. Lots of info on the internet about tips, but one thing to consider is that you don't have to cover every square inch to have a noticeable effect. You basically just want to add mass to the panel so that it's not a giant drum.

While I'm no expert, I have tried many sound deadening materials on several different vehicles.

The butyl mat is good for deadening pings. Think gravel hitting in wheel well type noise. As mentioned above, you don't need 100% coverage, just enough to absorb the vibrations. Sort of like putting your hand on a ringing guitar string or percussion cymbal.

Mass loaded vinyl seems to be the most effective at blocking sound coming through panels. The more coverage the better as it blocks sound coming through and absorbs sound inside the vehicle.

I have 2 very similar vehicles (same make, model, and body style). One has really good butyl mat coverage in/on all panels. The other has similar butyl mat coverage with mass loaded vinyl on interior of firewall, fenders, and drivetrain tunnel. The one with mass loaded vinyl is significantly quieter.

TxAg20 said:

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While I'm no expert, I have tried many sound deadening materials on several different vehicles.

The butyl mat is good for deadening pings. Think gravel hitting in wheel well type noise. As mentioned above, you don't need 100% coverage, just enough to absorb the vibrations. Sort of like putting your hand on a ringing guitar string or percussion cymbal.

Mass loaded vinyl seems to be the most effective at blocking sound coming through panels. The more coverage the better as it blocks sound coming through and absorbs sound inside the vehicle.

I have 2 very similar vehicles (same make, model, and body style). One has really good butyl mat coverage in/on all panels. The other has similar butyl mat coverage with mass loaded vinyl on interior of firewall, fenders, and drivetrain tunnel. The one with mass loaded vinyl is significantly quieter.

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What mass loaded vinyl did you use? And how heavy? 0.5 lb, 1 lb?

EnviroAg96 said:

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I've had good luck with this product. Easy to cut, bend and shape around uneven surfaces. I used it for sound deadening in doors.

https://www.amazon.com/dp/B01KZ5X7KO?ref=ppx_pop_mob_ap_share

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I used this to do most of my truck back in 2018 and I'm really happy that I did, it made a big difference.

Rule 1?

I used Second Skin 1# from Amazon

https://www.amazon.com/Second-Skin-Luxury-Liner-Soundproofing/dp/B01NAFWT3S/ref=sr_1_2_sspa?dib=eyJ2IjoiMSJ9.Pn3V7OwZFyzBUGR-wD3mKv5mb6aN0lsce7oromLdiSPA5P96Lpdc8WISXQKguRpIDc_4FuPH3mtgVU1WDhDdbr4cUVcpyQMRL_cq9T7mt3QoTcnsqfyyYAcbu4PBrKTQHQCgv28Dcv6-5M9bZPRVba7RoIR2UYF7nVu-Gs-7QKCNySZYmymI2ekryXGmR82s2f_pMsQaSAEHPTRJMCWhuNMBFD-JqXaqMJ4b8WCoEh4XMTEgGEWA2nb1ppXod-p2TayF4qpegxsAG4fKG4MQIzInCAChxRvsXrsXI729vK4.hlwvQFm0NuFkfp0MMJda0SrmgL99WRqrPCkU40hBddI&dib_tag=se&keywords=second%2Bskin&qid=1776866665&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1

1agswitchin4lanes said:

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Rule 1?

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Yes, I need to do that. Just haven't had time.