Sound Deadener

Mopar Interiors

  1. RustyRatRod

    RustyRatRod Weenie idiot loser. FABO Gold Member

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    Ok, so I flunked math. Help me out here. "About" how much sound deadener does it take in square feet to to the interior of an early A body? Eventually, I want to do ALL of it. Floors, doors, roof, sides, trunk, the whole shoot n match. But for now, just the floor in the passenger compartment. Thanks.
     
  2. A408Cuda

    A408Cuda FABO Gold Member FABO Gold Member

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    more than you would think, I used 2 boxes of this
    Noico 80 mil 36 sqft car Sound deadening mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening,
    Got it from Amazon, then about halve a box of the eastwood stuff,(pretty much same stuff) that did my floors inside doors and trunk area, then I used this on the roof from Summit did my entire ceiling with a little left over.

    RetroSound MAT-50-HD 14.6sqft
    res-mat-50-hd_ml.jpg
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    • res-mat-50-hd_s.jpg
     
  3. A408Cuda

    A408Cuda FABO Gold Member FABO Gold Member

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    I should mention that I used the reto sound on the ceiling because its more like a foam mat and its super light compared to the Butyl, I was worried about the Butyl sticking to the ceiling because I played hell getting to stick to the inside of the doors, the retro sound stuck great and if I had to do it again I would use that on the inside of the doors and the ceiling and the Butyl stuff on floors and any other flat lying area.
     
  4. RustyRatRod

    RustyRatRod Weenie idiot loser. FABO Gold Member

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    Yeah, the last thing I want is something that's gonna unstick from the roof or doors. Thanks for the input.
     
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    • Syleng1

      Syleng1 Karma is real and Life is short... FABO Gold Member

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      When I did the inside of the 66’ Barracuda I used two boxes of this stuff from Amazon.
      I also only did the floors, roof, inside of doors and inside of quarter panels but inside the car only. I did not want to see the product if I opened the trunk. Works good but I am worried now about if the car gets too hot and will it fail inside the roof.... on my new head liner.
      Glad I installed ac.
      Kilmat 80 mil 36 sqft Car Sound... https://www.amazon.com/dp/B0751CBXBT?ref=ppx_pop_mob_ap_share
       
    • Riddler

      Riddler Project EH-Body

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      I used 3 boxes of Damplifier Pro for the entire inside of my 76 Duster.

      Riddler
       
    • dodgedifferent2

      dodgedifferent2 Well-Known Member

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      I used 3 boxes of the noico stuff. In my 67 dart.
      I did the compartment floors, entire trunk, made a firewall behind the rear seat and did both sides. Did as much as I could of the firewall. Also did as much as I could on the inside of the fenders at the rear quarter windows.
      I eventually plan to get one more box to do the roof.

      So I would say a total of 4 boxes

      I should also add that I sprayed down lizard skin sound deadener.
      Reason for all this was to deaden more sound for our 7 month old baby to cruise with us during the summer.

      There is a recipe for a cheaper alternative to lizardskin.
      alternative to Lizard Skin - Hot Rod Forum : Hotrodders Bulletin Board
       
      Last edited: May 17, 2019
    • Keystone

      Keystone FABO Gold Member FABO Gold Member

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      Based on a tip I saw on here, I did my floors and trunk partition on the cheap using 2 rolls of this stuff:

      Capture.PNG

      I cut corrugated cardboard to fit, then applied the product to the pieces.

      20190315_195440.jpg

      20190315_195458.jpg

      20190316_192331.jpg
       
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      • 66jim

        66jim Well-Known Member

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        Anyone have any before and after sound decibel readings?
         
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        • mopowers

          mopowers Well-Known Member

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          If all your trying to do is 'deaden' the sound, it's unnecessary to cover the whole floor surface. Just focus on the broad areas that vibrate when you tap on them. You'll probably find that it's actually less than half of the surface. 'Insulating' is a different story.
           
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          • 383Scampman

            383Scampman Well-Known Member

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            I used Lizard Skin on the floor pan . DUI Lite underlayment on the roof and DUI peel & stick on the firewall and behind the back seat . there is no need to do the trunk because no one is in there . The only thing I would do different is to spray Lizard Skin up into the inside firewall higher . Great stuff . BTW the stuff you get at the home center is cheap but doesn't work . It's not sound deadener AND it may be asphalt based . You'll never get the smell out .
             
          • 69FBCuda

            69FBCuda Life in the Fast Lane

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            Length x width will give you the square footage, add some for hills and valleys. I would imagine it would be cheaper to buy it all at once in bulk vs buying for piece work. maybe someone more ambitious than I could put together a chart for the different A bodies(maybe their all the same, I dont know)
             
          • fratzog lover

            fratzog lover Well-Known Member

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            How have the results been? Really quiet? I imagine with all the bare resonant metal in these cars, the results would border on dramatic.
             
          • halfafish

            halfafish 66 Valiant, hot-rod in training FABO Gold Member

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            The product I used to do the floors and firewall on my truck (94 ram 2500 TDC) is no longer available, but the link below looks to be just about the same product. It was very affordable and worked well. I will be using the new stuff when I do the interior of the Valiant.

            Automotive Heat & Sound Car Insulation Store
             
          • RustyRatRod

            RustyRatRod Weenie idiot loser. FABO Gold Member

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            I kinda want to do both. Since I don't have AC and it does get hot here, I know it will help a little. I'll take all I can get.
             
          • RustyRatRod

            RustyRatRod Weenie idiot loser. FABO Gold Member

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            I am certain in my case, the difference will be quite dramatic. Considering I was driving the car with the rear floors cut out. lol
             
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            • mopowers

              mopowers Well-Known Member

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              I'm trying to find the article I've seen on sound deadening and insulation. I'll post up the link if I find it. I think the take away was that mass affixed to broad unsupported areas is best for cost-effective sound deadening while thicker padding like jute padding or cheap insulation rolls you can get at Lowe's works well for insulation (from sound and heat/cold). It's sort of a two-tiered approach.
               
            • DemonK9

              DemonK9 FABO Gold Member FABO Gold Member

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            • Mike69cuda

              Mike69cuda 64 is the new 17 FABO Gold Member

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              I used the Noico stuff from amazon & put it everywhere I could. Floors, under door panels, trunk, wheel wells. Used some aluminum a/c tape from Lowe’s to seal up seams. The Noico aluminum is thinner than dyna mat, so it tears sometimes if you stick your thumb through it working it into places. I just covered those with the tape.

              I had trouble initially getting it to stick to the firewall. Cleaned the firewall & it stuck. After a couple of temperature cycles the stuff bonds to the car & you can’t get it off even if you try.

              It has really quieted the car down a lot. Mine is an a/c car. The mufflers are kind of loud, but With the widows up, it is pretty quiet on the inside.

              I might have used about 100 sq feet.
               
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              • pauly v.100

                pauly v.100 Well-Known Member

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                x2 on B-Quiet Ultimate
                I used three rolls and had enough left for inside the rear quarters, needed or not there it helps.
                 
              • RustyRatRod

                RustyRatRod Weenie idiot loser. FABO Gold Member

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                This is actually the stuff I think I have decided on. It has great reviews. I am getting all the headliner insulation glue wire brushed off the inside of the roof now. Then paint. Then I'll order the sound deadener.

                Thank you all for the input here.
                 
              • RustyRatRod

                RustyRatRod Weenie idiot loser. FABO Gold Member

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                So I made my decision on the sound deadener. I got two boxes of the .80 KilMat, 36 sq ft each. Now, those of you who've installed this stuff. Do you have any tips? Anything I need to look out for. Thanks.
                 
              • halfafish

                halfafish 66 Valiant, hot-rod in training FABO Gold Member

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                I used a different brand but the material is the same idea. Mine did not have an adhesive backing but it was going on the floor only, under a new vinyl floor mat, so I didn't care about adhesive. Your install may be easier since this comes in sheets, mine was in a roll. I started in the center of each floor pan, and worked outwards. Where I had to cut to follow a contour, I taped over the cut with foil tape. I know this sounds stupid, but even after telling myself to allow LOTS of extra material so I wouldn't run short at a door edge or something, I still had two small patch pieces to fill in... :eek:
                 
              • MOPAROFFICIAL

                MOPAROFFICIAL Well-Known Member

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                If you did the whole thing and Dynamat I'd say about 4 to 4 1/2 sqr yards going from the front floor kick back all the way under the rear deck, then put the stock back board back up behind seat..and install an under hood style mat and have it clip to the x frame behind seat/truck side. You can cut them to the smaller size needed and they insulate well obviously. Chy 300's have'm
                 
              • fratzog lover

                fratzog lover Well-Known Member

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                This is what I was looking for. More accurate than "he said it works."
                 
                Last edited: May 24, 2019
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