hi to all please help my trunk in my civic is vibrating very bad i was thinking about buy the dynamat extreme from future shop it cost about 250 but the installer at oxford sound in Scarborough said that it is not going to stop the vibration
my question is is this true and what can i do to stop the vibration and is there any other type of sound dampener

 

which guy was it at oxford, the old guy or his son?

 

I wasn't too pleased with them. The old guy didn't seem to know much and the son didn't care to stop playing on his cell phone.

 

it was the son

 

yeahhh, i'm not all that experienced with sound deadening, but the young guy is a moron. the old guy isn't that much smarter either. the young guy told me that the big 3 won't help my van...that was the last time i went there. albeit all i know about dynamat is that it stops the bell from ringing in best buy, but i can't see how it wouldnt be an improvement.

 

the son told me that concrete will work last summer i spent $5000 last year i think
i need a new stereo shop concrete what the f***

 

Try using expanding foam (such as Great Stuff) you can buy it at home depot and its not very expensive at all. SHoot it into all the trunk lid's openings and try to fill as much of it as possible.

 

Sound deadener is going to add mass to the metal panels in your car. This changes the resonant frequency of the panel and does indeed make a huge difference in how it both sounds and the amount of rattle in your trunk. It will not solve it and the spray expansion type of foam can help as well. It is extremely messy and is very difficult to remove, if not impossible once you get it on something that you do not want it on. My price on deadener is a little cheaper than what you can buy it from on their site for B-Quiet material. It will give you more material than the trunk kit from FS and does a great job in this very situation. Start with this material and then retest.

 

see i didn't know i could call that sound deadening, thanks jalat lol. i remember a few years back we did this on my buddy's eagle talon, seemed to do the job

 

its more a way to create a 'denser' trunk lid so to speak