My soundproofing and deadening project...

[Spacesloth]

Haven't seen anyone bashing - I will say that the different trim levels have different levels of sound deadening. The Touring models are downright quiet - hey have alot more of the factory "glue" on type of deadner on the panels, they also have additional sound deadening in multiple locations The test models were the touring in alot of areas. I came from a 335i and a 4Runner Limited to the Civic Si, it was Loud as shit to me - after extensive sound deadening and effort mine is just right now. All of trunk, doors, rear seat area are done in Butyl and CCF, I also added some butyl to the firewall. Made it great, will remove front seats and put out my remaning butyl and CCF under them.

Where did you happen to add butyl and ccf to the firewall and rear seat? I did the doors and the trunk, Honda didn’t have any insulation around the rear wheel well on the si like upper models do. Did you happen to take any pictures along the way? And last question, what materials did you use?

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[bahndrvr]

What did you end up using for butyl and CFF? Did you use any Dynamat-type material as well before hand? How much did you use?

I used Norinco 80mm and CCF I don't recall the brand. I will say I did the entire Trunk with around 25% coverage and noticed nothing with the Butyl, so went back and did around 70% coverage but was still not enough, hence the CCF, which between the two helped immensely! I did the butyl under the rear seat wherever I noticed resonance from hitting with fingers - nothing scientific there in how I did it as alot of it is doubled up sheet metal for structure, could find where there wasnt' structural based metal to add to it. Did not do any of the CCF under the rear seat wasnt' needed.

Firewall the carpet is well backed, but was able to put quite a bit with the Butyl - did not realize how open it is under our seats but noticed not long ago, not even carpet and what is there seems to have lost the backing under the carpet. I expect some additional decrease once i pull the seats and place what is left of my Butyl and CCF under the seats

Also I did provide pics in my build thread - don't think i put them all as it's kinda boring to look at. I bought the Butyl from amazon and the CCF from Ebay.

 

[DiamondPuma]

I used Norinco 80mm and CCF I don't recall the brand. I will say I did the entire Trunk with around 25% coverage and noticed nothing with the Butyl, so went back and did around 70% coverage but was still not enough, hence the CCF, which between the two helped immensely! I did the butyl under the rear seat wherever I noticed resonance from hitting with fingers - nothing scientific there in how I did it as alot of it is doubled up sheet metal for structure, could find where there wasnt' structural based metal to add to it. Did not do any of the CCF under the rear seat wasnt' needed.

Firewall the carpet is well backed, but was able to put quite a bit with the Butyl - did not realize how open it is under our seats but noticed not long ago, not even carpet and what is there seems to have lost the backing under the carpet. I expect some additional decrease once i pull the seats and place what is left of my Butyl and CCF under the seats

Also I did provide pics in my build thread - don't think i put them all as it's kinda boring to look at. I bought the Butyl from amazon and the CCF from Ebay.

Yeah, I used the exact same stuff too! Noico 80mm, but I ended up using Rockwool for absorption rather than reflection like you did with the CCF.

 

[Kane666]

how did you remove the tunk carpet where the hooks for a car seat go? i cant figure out how without breaking something

 

[ahto42]

I plan to add armaflex mat13mm to the doors and trunk area

 

[F Herrera]

So, the 10th gen Civic's, in my honest opinion, are really great vehicles! However, I think that Honda could have done a better job blocking road noise- thus here I am, and you are too!

I'm making this photo thread to answer any questions or inquiries about sound deadening or proofing your Honda if it peaks your interest; and what it takes! (tearing out your entire interior... and some hair too...

Day 1 & 2- project #1: The Trunk

Day 1 & 2- project #2: The Doors (undocumented)


Day 1 & 2- project #3: The Interior (aka: The Hair Puller)

UPDATE 08/23/2018
Interior Install and final words

Conclusion
All-in-all, was this three-day soundproofing marathon that extracted literal blood, sweat, and tears of frustration from me worth it?
Yes!
Honestly, for me, it kind of has to be. For the amount of time and money that I sunk into this project, it had to yield results, and I am glad that it actually did! A significant audible reduction in noise now (not) heard and my stereo's quality of sound has improved. Now that there are not as many competing frequencies my car's speakers can be heard in all of their OEM glory.

Was is actually a significant reduction? Yes. To my best estimate, it was around a minimum of 12 - 15 dB of total reduction. Now, higher frequencies like wind noise remain, there has been no significant reduction in that range of frequencies, but for lower and mid-range they are faint, still existent (they are not silent), but it feels like a luxury ride.

Now there are some things that I wish I did differently: I wish I took sound measurements before I completed the entire project and at each stage of the journey to see which mini-project had the most impact; I wish that I budgeted my time and resources more effectively, and thank god for Prime One-Day shipping; I wish I bought extra clips because I broke about five of them during the re-install- not the extraction of the interior (surprisingly), but believe it or not, there are ZERO "rattles"; last, I wish I disconnected my battery before accidentally hitting an air-bag sensor and triggering a side curtain airbag to shatter my window and...
Well, not really... the last one didn't happen, but seriously, disconnect your battery cause you never know what the Universe might throw at you...
Moreover, I'm pretty impartial to the project as a whole. Would I do it again? Yes! But, I'd do it smarter and cheaper. Maybe I'd skip the trunk, it didn't really do much to quiet the ride, but again- I didn't take pre-install measurements.

The whole project cost me ~$275

Project related videos:

Impressive job!
Let me make you some questions. I have watched a video of a Chinese team insulating a VW tiguan and they disassembled and insulated the wheels fender and the space between this and the cars body. Did you do something similar?
Disassembling the fender is a hard job for me (new on this) and I would like to know if it's worth it.
Another one.
Anyone knows a video of how to disassemble the trunk carpets?
Mine is an EU hatchback.
Thanks and regards from Spain.