Sound deadening

No pics, we've all seen them before.
Ordered the Noico 80 mil and the liner and only the liner and roller showed up. Figures it wasn't the other way around, huh?
Reordered the 80 mil and got both front Access Cab doors done yesterday. Great difference.
Now I can hear more of the mid bass and I've cut back the underseat sub.
One thing I did notice is the added weight in the cab has softened up the ride. I don't remember anyone mentioning that before. Let's see what the weight does to my mileage.
Today I'll get started on the back wall over lunch.

 

It isn't the weight that's doing that. Well, I guess technically it is, but the damper is now squishing vibrations that were coming into the cabin [and created within] from the doors - giving it a more luxurious feel. You probably didn't add more than 20 - 30 lbs to the doors. It shouldn't make a measurable difference in mileage.

 

Yeah does your mileage vary that much between you in the truck alone and you and a passenger?

and that’s adding 150 pounds of extra weight.

 

That's because it's not a thing.

Unless you are doing improper coverage, you don't need to put it on every piece of metal. If you are covering what needs to be covered only 25-35% is needed. Anything above that has fast diminishing returns. For proper coverage you should only be using less than one box of the 80 mil stuff that is going to add what, 20 lbs to your truck? That is for the ENTIRE truck.

Save yourself the wasted money and use proper amounts and if you want to go crazy, go get some mlv and *MAYBE* you could convince people that it changes your ride, seriously doubtful though.

 

My wife would punch you in the throat if you said she weighed 150 pounds

 

The ride is softer, not just the sound.

 

Right - figured that's what you were saying. Dampers definitely take some of the harsh out of the ride. I've done a full treatment on my 1st gen and the difference from stock is amazing.

 

The 80mil is 0.7lbs/sqft. I'm guessing you bought the 18sqft pack which is 12.6lbs.

I have a leer cap on the back of mine which is probably 200lbs. Even with this hanging over the rear axle is barely noticeable.

It's possible that because the doors are deadened that perhaps the suspension appears softer as a result.

 

Probably telling punks to get off my lawn.

Anyway, think of the CLD like this, if you can knock on it and it has a "reverb" or "hollow tin" sound, throw some on there to stop that sound. Looks like you have purchased your product already but this site is quite the wealth of info:
https://resonixsoundsolutions.com/
The guy that started this business is one of the best sound guys in the country/world, he knows his shit inside and out.

Full disclosure..... I covered my truck almost 100% in cld before learning, i have removed quite a bit of useless cld tiles and strips since then with the same results. The roof can get a bit more than 25-20% because of how thin it is, revert back to my "reverb" comment. The black hole tiles on that site i link (you can get elsewhere but resonix is an American owned small business) are pretty amazing for your front doors and roof to absorb sound. Then if you want to go down a VERY dark road and get crazy. Look into blocking sound with MLV or other products (lead sheets).

Good luck!

 

Well, I got 20.8 mpg from Philly to Boston. No worries at all.

 

So if I wanted to kill mostly ROAD NOISE (my tires and exhaust drone are loud on the freeway), is it smarter to just use a noise barrier on the doors and back wall? Would it be overkill to use the barrier PLUS some of the Blackhole tiles for added interior resonance? I've been searching and reading non-stop--turns out I'm not too smart about this stuff. I thought some plain old NOICO would help lol

 

Barrier layers are only really effective if they're as close to 100% coverage as possible. You really need to layer a barrier on a damper - with a decoupling layer where needed, in order to make that happen.

You might benefit from black hole tiles in the doors. Acoustic absorption is a good thing to have in there.

 

Thanks for posting the link.... alot of good info there

 

So what’s a persons best bang for the buck, if they just want to quiet the cab and make the doors sound good when they close? Half/ass cover the doors and back and call it a day? With what exactly?

 

Probably the Noico 80mil for something basic. I got the 18sq ft box ($33) and that seems like it's plenty to do the back wall/doors when not doing 100% coverage. I did most of my back wall and the doors behind each speaker but I have enough extra that I plan to do some of the floor too.

 

And was worth the effort? you could tell a noticeable difference?

Behind the speakers inside the doors? Is that the best place in the doors to focus?

 

Well, in my case it was based around speakers/audio quality and more an indication of coverage you could expect with 1 box. I believe the back wall was definitely worth the effort as it was pretty easy and I could notice a difference in road noise there. I chose only to do behind the speakers inside the doors as I was replacing the factory speakers and wanted to improve sound quality.

In your case, I'd plan to cover more surface area inside the doors which would be behind the plastic moisture barrier rather than just behind the speaker. Depending on your budget you can always improve outcome by adding layers on top of the deadener material like close cell foam/mass loaded vinyl mentioned above.

I plan to go back and add more in the doors and some on the floorboard but I haven't worked up the desire to remove the seats just yet.

 

So has anyone posted pics of the "recommended" areas to focus on covering? I'm about to jump into this task now and it would be awesome if anyone has shared this info.

 

I'm not expert or experienced in any sense.

Suggest to ride in the truck with windows closed, radio off. Listen carefully. You should be able to detect/hear where the 'noise' is coming from.

First, look to the weather stripping around the windows and doors. Solve the weather strip first. Then the sound is most likely coming from the back wall and doors. After that......floor and roof.

Be sure to do your research. Learn the purpose of CLD and MLV products. How much to use and what not to use.