Sound Deadening Removal

[VickiT]

I started to replace the carpet in my '03 V8, and was surprised that the factory sound deadening was cracked and popping out in some places. I started to remove the rest and this has become the bane of my existence. The residue left from the chunks is slowly coming up with Goo Gone.
I found a YouTube video of someone using dry ice and I will try that. Any other advice?
I want to drive my car again

 

[spartacus]

I started to replace the carpet in my '03 V8, and was surprised that the factory sound deadening was cracked and popping out in some places. I started to remove the rest and this has become the bane of my existence. The residue left from the chunks is slowly coming up with Goo Gone.
I found a YouTube video of someone using dry ice and I will try that. Any other advice?
I want to drive my car again

A heat gun and a plastic scraper will help or a hair dryer in a pinch. Also brake cleaner just keep it away from plastic and rubber.

 

[Jasonredwood]

I just used dry-ice, works great. theres a few youtube videos on it. I tried using googone at first and it made it a sticky mess but was working. THe dry-ice seemed way faster after it did its thing.

 

[snowboardwcu]

curious why keep removing it? why not just get some noico butyl mat and cover all that back up and add to deadening while you do it?

 

[Jasonredwood]

curious why keep removing it? why not just get some noico butyl mat and cover all that back up and add to deadening while you do it?

Youre right. That reminds me OP... if you do a internet search of the effectiveness of sound deadening, its effective at like 20-30% of surface coverage and anything more, it becomes marginal. Something like that. I found that outer covering my entire FJ60 floor with a noico similar product. It doesn take much to deaden the sound. For heat shielding thats a different product and requires a more thorough coverage.

But yeah OCD is OCD, I get it.

 

[snowboardwcu]

Youre right. That reminds me OP... if you do a internet search of the effectiveness of sound deadening, its effective at like 20-30% of surface coverage and anything more, it becomes marginal. Something like that. I found that outer covering my entire FJ60 floor with a noico similar product. It doesn take much to deaden the sound. For heat shielding thats a different product and requires a more thorough coverage.

But yeah OCD is OCD, I get it.

so, anecdotally, i did a little testing of my own in this realm. anything under 10% is worthless. and i actually found big gains all the way up to 90% coverage. so 90% coverage was waay better than 50% coverage. beyond 90, diminishing returns. makes sense. this is the butyl mat layer only.

i was really happy with the sound deadening project in this vehicle.

 

[Bluesky 07]

so, anecdotally, i did a little testing of my own in this realm. anything under 10% is worthless. and i actually found big gains all the way up to 90% coverage. so 90% coverage was waay better than 50% coverage. beyond 90, diminishing returns. makes sense. this is the butyl mat layer only.

i was really happy with the sound deadening project in this vehicle.

This is an important distinction. The butyl helps eliminates rattles & panel noise and 50-100% coverage is best. I did Noico from Amazon with 100% coverage of butyl and the top foam layer. Overkill? Maybe. But it was the only time I'd be accessing most of the places I worked on and I had plenty of material. Very happy with the results.

 

[VickiT]

Thank you everyone!
I used the dry ice method yesterday and was able to remove the rest of it. Now have to get rid of the black residue.

To answer the why of this. While I do tend to be OCD, this became what it did because I thought I had to remove it. It was cracked and coming up on its own in chunks. I would have preferred to leave it and just cover it, but I thought to put the Noico stuff down, I had to remove the loose pieces. If I'm wrong, save me from this Hell and tell me I can leave the residue and just cover.

The carpet I got is thick and has the extra backing. I'm going to try to replace all the seat belts when I get the leather redone. I love my V8 and just want to renew it so I can drive it another 300,000 plus miles ❤

 

[Jasonredwood]

Personally I think it’s a good idea to remove what’s broke/cracked and loose. The sound deadening won’t really deaden sound waves of it’s not adhered to the metal.
When I did the sound deadening and insulation on my fj60 I was super pleased with the outcome. The doors having sound deadening on them were next level too btw.

 

[Bluesky 07]

Personally I think it’s a good idea to remove what’s broke/cracked and loose. The sound deadening won’t really deaden sound waves of it’s not adhered to the metal.
When I did the sound deadening and insulation on my fj60 I was super pleased with the outcome. The doors having sound deadening on them were next level too btw.

Agreed. When I ran across the factory stuff inside some of the panels where I was adding sound deadening material, I carefully peeled it, placed the Noico layers, than put the factory stuff back and rolled it down. Worked fine. (I get that you couldn't do that b/c of the deterioration.)

 

[snowboardwcu]

This is an important distinction. The butyl helps eliminates rattles & panel noise and 50-100% coverage is best. I did Noico from Amazon with 100% coverage of butyl and the top foam layer. Overkill? Maybe. But it was the only time I'd be accessing most of the places I worked on and I had plenty of material. Very happy with the results.

yep. important to understand what each layer does. i read so many people talk about using closed cell foam to deaden the sound. nope, try again.

again i was really happy with the project. the truck even rides smooth as butter at 85mph now. little slower off the get-go with that extra 300lbs but whatever.