Soundproof Walls

use duct tape for car audio sound sound proofing put on thick?

or other tape like thick 3M heat proof stuff in layers thick?. dynamat and the other is to much. i got enough for my trunk lid then no more. using tape thick and carpet padding for the rest. dynamat also weighs to much. that is the main reason i ask.

Public Comments

1. No. Stick with the dynamat.
2. If you used enough then it would help dampen it a little bit. By that time you would end up spending more then you would on Dynamat or similar material. I also don't think carpet padding will help dampen very much. There are cheaper alternatives to Dynamat. Elemental Design's eDead is about the cheapest stuff I know of that works well. There is also some other decent products that work for cheaper then Dynamat. If you want to go an even cheaper route then Lowe's or similar store have some materials you can use. They have some stuff that is for a house that you could use in a vehicle. You could also even go with a spray foam insulation that would help with dampening a bit as well. When you add the sound dampening products you are just trying to add mass to the panels. That will help to prevent excessive vibration of the panels. Any material you add will help but the best stuff is going to need to be designed specifically for dampening. Good Luck!!!
3. You can get some stuff at Lowes in the roofing department called... all purpose flashing.. that will work as good as dynamat.Its really sticky though and a little hader to work with.I used some stuff called Weather Wrap on my car before and it worked good but I don't think they make it any more; but the stuff they have at Lowes now is very similar only its much stickier and not as thick as Weather Wrap was. You can always use two layers for more sound absorbtion. Also Home Depot has some stuff like that too, but it only comes in large rolls. Check it out...