Sound Deadening/Isolation - Headliner

How much product (thickness) can I fit on the roof behind the headliner?

I was looking at 80 mil butyl sound deadening + 315 mil sound isolation heat/cool closed cell foam. I did 50 mil + 157 mil of those on my doors, floor, rear cab wall, but that was a while ago and I can't remember how thick that was, but it seems to me it'd add up with regards to the headliner.

If not that option, what's the best bang for my buck? I will ONLY be doing the headliner at this time as the rest of the truck is pretty well squared away, so I only need ~20 -25 sq ft of material.

 

I’m not sure what thickness he used, but check this out

https://www.tacomaworld.com/threads/my-silver-gsu-build.460083/page-3#post-15503347

 

I did all three stages from the glass down... on the headliner is just did the buytl

 

same here

 

https://www.tacomaworld.com/threads/removing-your-headliner-and-insulating-sound-deadening.394469/

 

Not sure how much room you have, but neoprene can be bought in multiple thicknesses, works as a thermal insulator and is compressible if the fit is tight. It isn't going to block a crazy amount of noise, but it also works as a decoupler and can cut down on rattles.

 

Excellent. I have that same foam insulation on my doors, but it's now unavailable. Looks like the replacement option is thicker. Wasn't sure how thick would be too thick.

Thanks for the link.

 

There’s about 3/4- 1 inch of space between the roof skin and the headliner. Obviously less space at the support ribs or brackets for the so glass holder and dome light so you have plenty of room for insulation.

 

I just sound deadened and heat insulated my roof this past weekend. Here are the items I used. Let me know if you have any questions.

Sound Deadening

$65 KILMAT 80 mil 36 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening

https://www.amazon.com/gp/product/B0751CBXBT/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Tape over the seams of the deadening material to have a single aluminum face

$13 IMPRESA - Aluminum Foil Tape for Sealing and Patching Hot and Cold HVAC, Ducts, Pipes - Insulation Home and Commercial - 1.9"es Wide (150 Feet/50 Yards)

https://www.amazon.com/gp/product/B01FROBUXE/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Heat insulating layer and sound deadener

$26 uxcell 1 Pcs 315mil/8mm 16.36sqft Car Heat Insulation Pad Underlay Foam Self-Adhesive Sound Deadening Replace and Auto Dampening Mat 60"x 40" Black

https://www.amazon.com/gp/product/B01KAD24RI/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
Tessa taped all the wires in the headliner because I pulled them all out of the hotglue material that was holding them down

Boxiti set of 6 pcs Tesa 51608 Black Fuzzy Fleece Interior Wire Loom Harness Tape 19 mm X 15 Meters

https://www.amazon.com/gp/product/B07FKT7WYK/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

 

Thanks a bunch for the links. Was the 16 sq ft. of insulation pad enough to cover the roof? I have some sound deadener lying around, so I might be able to get away with just buying a little extra if that's all I need. I'm trying to avoid having a ton of excess material if I can avoid it.

 

Yeah I actually ordered two sheets of that because my initial thought was to do full coverage. But after dropping the headliner I realized that you can’t really do it because of clearance issues (you would be pressing pretty hard to get the headliner back up flush) so I ended up only using most of one of the sheets. But I plan on doing the back panel behind the back row (I have a DCSB) so the left over and the extra whole sheet should be enough.

 

1. Why Tessa tape instead of hot glue? I have both so i'm wondering if i should use Tessa Tape as well
2. Does Noico Closed Cell Foam work i have 150 mil and 315 mil
3. How vital is the taping of the seams bc i read that in the noico manual but it ended up being a pain in the ass. plus it was absurdly expensive. any suggestions on a cheaper brand?

Also, I have MLV do you think that would fit as well or instead of one of the other things

 

My truck is about 75% sound deadned
Soundskins in the 4 doors as wells as some MLV and Noico Closed Cell foam
https://soundskinsglobal.com/products/soundskins-pro-toyota-tacoma-4-door-template-kit-2016-to-2021?variant=32278864494666&currency=USD&gclid=CjwKCAiArOqOBhBmEiwAsgeLmT8LNvin1UjVmUpPKB_Eqkuf4E9E0GUaw3YNkcziyYWFCkUiMhSA5BoCTg8QAvD_BwE

The Floors and back wall are Noico 80 mil and Noico Closed Cell 315 and 150
https://noico.info/products/noico-80-mil-2-mm-36-sqft-3-4-sqm/
https://noico.info/products/noico-red-170-mil-18-sqft-car-waterproof-sound-insulation/
https://noico.info/products/noico-red-315-mil-20-sqft-noico-liner-heat-and-sound-insulation/
https://noico.info/products/noico-tape-finishing-sealing-tape/


My plan is to do the headliner next. I dont have to much sound leakage so i can bump as loud as i want but it's still bleeds enough that i want to do more

How much of a Difference does doing the headliner make?