Thanx for sharing this info... i'm going to soundproof my car using this bitumen next week...

But after read this thread.. really not dare to try it anymore...

I did see those Car Accessories shop use this bitumen to sound proof their customer car... I know they use bitumen, coz they bought many rolls from my friend hardware shop. They charge RM400 for sound proof 4 doors.

My friend use this bitumen to sound prood his myvi too... If not wrong, already 1 year plus.. I gonna check whether that bad thing happen to his car or not..

i use superlon for 4 doors, more than 1 year already, now still ok

no wonder la say got problem
the way u stick also wrong already
i done mine for last 2 years ++ also
no problem

stick wrongly? Mind to tell me more about it?

you stick also stick huge sheet at once la don;t stick strips like that
if they come in roll, stick them side by side, leave no gaps.
after done, cover with one layer of superlon. baru soundproof

MAYBE Depends on the brand also..

My bitumen strips still ok after 2 years 5 months...the under bonnet also never melt..

btw stick wrongly how?

After taking off my panel to replace the transparent plastic sheet with a foam..

My 2.5 years old bitumen strip..


My 2.5 years superlon..


Recently installed EVA foam..

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Added on May 5, 2008, 6:41 pmThe black residue on the frame was some butyl sealant/bitumen like substance for the weather transparent plastic sheet that I've thrown away..once u take it off..damn messy, not from the bitumen roll.

This post has been edited by hypermount: May 5 2008, 06:41 PM

TS, where is the dripping picture? I want to see. Is it as bad as what u're saying.

This post has been edited by N's: May 5 2008, 07:09 PM

Another citical area, my 2.5 year old bitumen strip on bonnet...it's still hot even it's under the stock fiber based insulation cover. It didn't melt or got get harden.

@hypermount, your bitumen don't have any sign of melting.. But my 1, terrible.

@N's, i'm not free to snap the picture today.. Maybe I will try tomorrow because no time today.

actually does sound proofing really work?why is every1 soo keen to sound proof their car?not flaming or wat la,i just dont see y its an imp mod..

sound proof is really work for me. My cabin hardly can listen sound now.. Last time, my car just using this bitumen, it slightly better. The sound had been block and my ice getting better.. But recently, I just changed my tint film into Security Film which it anti smash, the sound proof getting better.. Only able to hear some motorbike sound pass by beside your car. Because the tint film is thick and block the sound from window.

add-on, forget a point.. When close the door, it sound better.

This post has been edited by singchaii: May 5 2008, 08:49 PM

ohh..ok..just a few tiny strips to cover the holes in the door can make such a big improvement? where to buy superlon frm?maybe i shld try it out as well..and how u guys diy the firewall?theres a cazy amount of wires and not much space to work..

and yea i noticed when i drive with the door closed the cabin is quieter!

haha.. Sorry.. It should be, the sound of closing door is better..

I stick the bitumen doesn't just stick few tiny strips only. I stick it row by row... I not sure where can get superlon.. Maybe can see at garage sales.

haha ok i thought u were being sarcastic!btw u drive an iswara right bro? no offence, i had one b4..rattles like a tin can..can see y u decided to sound proof it..how many panels do i have to do for a simple diy job with satisfying results?

best sound proof material to me
dynamat~

Er.. yes I driving a Saga LMST.. Our car body quality, I believe all house have it, a milo tin or ovaltine tin. But, so far I dun face any rattles sound.. I only sound proof 4 doors, and rear boot to minimize my muffler bass and maximize my woofer bass. hehe.. Beside that, I also got stick sound proof stuff on my bonnet to reduce my engine sound. =)

dynamat expensive la bro..too costly for trial diy project

how bout the spongy material they selling at brothers? i side sticky the other side kilat like dynamat,in between got spongy material like superlon..not very cheap also but sounds promising as it has all the right elements..

make sure it not absorb water lor. or else, scare will rust your door.. Actually, you sent to shop do lor.. It more good, and more worth. =) But make sure do at some recommended shop lor.

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Added on May 6, 2008, 8:02 amHere the image of melted bitumen. It melt and drop off around 50% as when I stick, is stick row by row.









This post has been edited by singchaii: May 6 2008, 08:02 AM

And your car is black too. Heat absorbent. Thas is terrible.

It not terrible.. Is da*n 9 terrible.