Dynamat

Discussion in 'General Car Audio Discussions' started by Willy D, Dec 15, 2006.

  1. Willy D

    Willy D Full Member

    I think I have seen on here someone mentioning the use of that rubber ice dam material instead of dynamat.....Is that correct? You can get a roll of that stuff at Lowes/Home Depot/Menards, etc for $50.00 and it is 3' wide and like 33 feet long.....

    When I do my install, I plan to take both front seats out and I am gonna have to take the rear seat out. The carpet on the back wall is coming off and the trim on the sides in the rear is coming off to install rear speakers. The front stage is going in the front doors, so I will have the door panels off.

    My question is this.....How thick is this stuff? Does it affect how the panels will fit back over it when it is installed? Is it a pain in the ass to allow for screw holes, etc to be put in it to put mounting screws back in place??

    I figure with all the seats out and trim in the back out, door panels off and carpet can be easily removed (since I am gonna run wiring under it)....Almost every surface will be exposed except for dash and headliner (not takin those out).....I could probably cover all that surface with a roll of this stuff...

    thoughts??

    Willy
     
  2. Willy D

    Willy D Full Member

    Also....

    If I cover the back wall with this material, can I apply the liquid nails to it to attach the 1x4's??.....

    Willy
     
  3. aznboi3644

    aznboi3644 Full Member

    Well...There is a thread somewhere on the12volt that I read where the guy put two layers over the whole interior of his car with the WATER AND ICE SHIELD

    The guy just said to heat it up when you apply it and stick it on there good.

    I'd try it out on a scrap piece of metal to see what works best for it to adhere

    But the guy who did his whole car said nothing has come off yet and its been like a year
     
  4. TheViking

    TheViking Well-Known Member

    That stuff will work. Just be sure to do some surface preperation before application. Lcan all the surfaces to be covered with laquer thinner or 3M adhesive cleaner. once cleaned and dry, then the material will properly adhere. A heat gun will aid in the installation as will a small rollor to press it onto the car. it will work as well as dynomat. The idea is to create a surface that is dampened, so as not to resonate.

    One layer should be good for the most part, maybe 2 layers on larger unsupported surface areas. After application, find screw holes by sitting the panels back in the proper position and use an awl or small screwdriver to "find" the holes. The thickness of the materail should not affect the reinstallation of the interior components unless you get carried away.
     
  5. Willy D

    Willy D Full Member

    When I was at Lowe's I saw this stuff in the box....I was not able to get my hands on it or touch it and see how thick it was..I figured that the whole rear seat, rear wall and rear side walls were gonna be exposed and I should be able to cover those with the stuff...I have never messed with dynamat or even held a piece in my hand....I figured the ice shield stuff would be far less expensive and if it was pretty much the same thing, I would do that...I know that adding mass to any panel will help it to not resonate....Figured since I was gonna have all the seats out and the door lower jam trim off, it would be a simple matter of pulling the floor carpet out and putting this stuff down under there too...

    If it helps even a couple DB's of reducing road noise, that will give me a better dynamic range and improve my overall SQ....

    thanks

    Willy
     
  6. Throttletune

    Throttletune Full Member

    Hi Willy,

    I bought some and did the wife's doors. As was said, clean the surface well. I also bought some adhesive in the spray can and gave each surface a nice shot.

    On hers, I put 1 layer on the skin above the crash bar, 1 layer below. Then, I riveted a much bigger piece to the crash bar stretching the length and height of the door. I put one extra piece behind the speaker hole. So in essence, I had 3 layers behind the speaker. I then used the water shield on the door as a pattern, and attached it to the door, with 2 more small pieces cut out where the speaker hole is. With this stuff, it is gritty, so I took a little die grinder with a 3" pad and "sanded" a lot of the surface off.

    It made a huge difference. Both in sound, and how the door sounded when it closed.
     
  7. jcurry05

    jcurry05 Full Member

    Does anyone know the actual name of this stuff. Iv beentrying to find some but I dont really know what to look for.
     
  8. Throttletune

    Throttletune Full Member

    It's called Ice and Water Shield. You can find it in the roofing section and be prepaired..... It's a big enough roll to do yours and all your pals cars probably.
     
  9. aznboi3644

    aznboi3644 Full Member

    I will quote myself for the name of this stuff lol....READ PEOPLE!!!!!