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Screw dynamat. Peel and seel great sound dampening material....

Discussion in 'The Hokey Ass Message Board' started by Blake84, Jun 29, 2012.

  1. itsmeb
    Joined: Jul 18, 2011
    Posts: 74

    itsmeb
    Member

    Glad to hear someone else has used this product. I did the complete inside of my 1930 Chevrolet and it works great.
     
  2. Da Tinman
    Joined: Dec 29, 2005
    Posts: 4,222

    Da Tinman
    Member


    It doesnt like to stick on overhead surfaces, add in the heat from the engine and I dont think it will work for that.

    I use this stuff a lot and have had no complaints at all, other than if you stick it to something and have to try to get it back off.
     
  3. S.F.
    Joined: Oct 19, 2006
    Posts: 2,895

    S.F.
    Member

    way cool, that looks exactly like dynamat
     
  4. Don: I used a similar product from Lowes that I believe was duct insulation. It seems fine and is foil backed so I don't anticipate any problems plus it cost only $13.00. I even have some left over! Tim
     
  5. Joelchris
    Joined: Jun 10, 2008
    Posts: 39

    Joelchris
    Member
    from Pomona

    This looks like a clean and easy install. What did you all use to cut and smooth it out?
     
  6. 53choptop
    Joined: Mar 5, 2001
    Posts: 1,204

    53choptop
    Member

    I use it and love it, I learned it does not like on vertical, smooth or cold surfaces too much, so I buy foil tape and tape the edges where needed. I don't do the roof, because it will come off. On places that I want to to stick even more, like small pinholes in the floor, I heat it up a little with a blow torch (just a little) and press down to embed it into the pinholes.
     
  7. billsill45
    Joined: Jul 15, 2009
    Posts: 784

    billsill45
    Member
    from SoCal

  8. gsport
    Joined: Jul 16, 2009
    Posts: 677

    gsport
    Member

    For that price I'll be trying it in my '50...
     
  9. Scott
    Joined: Dec 23, 2004
    Posts: 2,770

    Scott
    Member

  10. i use it and the foil bubblewrap in tandem i cut the peel and stick with either sissors or a razor blade knife its easy quick and cheap

    dynamats shop is about 10 mins from me
     
  11. twenty gallons
    Joined: Jun 7, 2010
    Posts: 444

    twenty gallons
    Member

    Used Peel n' Stick on a rebuild for 72 Camaro, First time we put it on, it started falling off the interior roof and side panels, We found a little secret, use a heat gun and pre soften the back of the stuff and pre heat the place you put it , stick it in place, then use a little roller to press it in place and it sticks so good you cannot peel it off again, at least in one piece.
     
  12. NonSenCe
    Joined: Apr 10, 2012
    Posts: 4

    NonSenCe
    Member
    from Finland

    isnt dynamat butyl (as in rubber kind) and this just tar based?

    these tar/asphalt based roofin mats have been cheap mans silence mats for ages. they do ok, but not as good as "real" mats. expensive stuff is made of different material.. it makes sense its different priced too then.

    i never understood the price of dynamat.. well i did understand, i just never saw the need to spend that much on silencing my own rides.. these cheaper methods have done well enough for me. (often i tried to silence my cheap junkers that cost less to buy than the dynamat treatment would of been)

    right now im trying to find a cheap butyl based silencer mat, so i was hopeful this would of been it.. but its just the same stuff i known before. :)
     
  13. JEM
    Joined: Feb 6, 2007
    Posts: 1,040

    JEM
    Member

    Sounds to me like someone needs to come up with a 'heat table' - a piece of wire shelving with some heat elements under it? - where you could lay out your strips in the order you plan to lay them, and have it precook the things to ~ 200degF for a nice gooey install. Maybe use an old fluorescent shoplight fixture for the housing, if you can find one that's all metal?

    I'm sure it'd need some experimentation to get it right, hot enough to be gooey but not drip, but it'd probably make the whole job go a lot faster. Just don't set it on anything flammable while it's on. Maybe I'll have to do it for the '64 wagon, acres of floorpan in that bugger. Just bring an old pair of welding gloves to do the actual picking-and-sticking...it'll dampen sound better if it's thoroughly stuck to the substrate, too.

    Anyone got any suggestions on the heat elements/thermostat/circuitry?

    Either that or I've got to pick the three hottest days of the year and lay them out in the sun for an hour...

    Our E39 BMWs ('98 540 and '00 M5) have massive amounts of sound deadening under the carpet, something around 1.5in of molded foam on the back of the carpet over the tunnel area, and around an inch under the rest of the carpet, in addition to the asphaltic mat on the pan. On those cars the tunnel's got the driveshaft, a heatshield under that, and the exhaust pipes paired under the heatshield, so pretty much all your drivetrain noise sources are in one place.
     
    Last edited: Jun 29, 2012
  14. Hackerbilt
    Joined: Aug 13, 2001
    Posts: 6,249

    Hackerbilt
    Member

    Is there a concern with regards to fire and potential burn rate with this stuff compared to other methods like Dynamat?
    Just askin'...Dynamat might be WORSE for all I know! LoL
     
  15. harley rider
    Joined: Aug 11, 2010
    Posts: 527

    harley rider
    Member

    I like the fat mat.about the same price as peel and stick
     

    Attached Files:

  16. Boones
    Joined: Mar 4, 2001
    Posts: 9,691

    Boones
    Member
    from Kent, Wa
    1. Northwest HAMBers

    how are you guy prepping the surface before applying it to the floor or doors?
     
  17. Blake84
    Joined: Feb 4, 2012
    Posts: 760

    Blake84
    Member

    I did zero prep and it stuck fine inside my door I went right over the rust and buildup. I then used a wheel to press it down and it's on there for good unless it gets really really hot apparently. I highly recommend it. It was such a big difference
     
  18. 62rebel
    Joined: Sep 1, 2008
    Posts: 3,233

    62rebel
    Member

    worries about fire seem a little like wondering if the horse had a bridle on when it went out the barn door.... sure, asphalt burns; how much does the average old car have on it already in the form of sound deadeners, undercoat, etc.... an accident bad enough to set the car on fire will more than likely have killed the occupants already.

    most of the local stereo shops use roll after roll of peel-n-seal instead of dynamat. they put the money saved into better things.
     
  19. striper
    Joined: Mar 22, 2005
    Posts: 4,498

    striper
    Member

    The MSDS attached in an above post doesn't seem to rate the flammability as a concern at all. I would imagine that stuff would burn slowly but would drip. Napalm anyone?

    I think there are far more flammable materials used even in old cars. The foam in your seat for one.

    If I had a car I wanted to seal I'd give it a try.
     
  20. BIG-JIM
    Joined: Jun 13, 2009
    Posts: 1,374

    BIG-JIM
    Member
    from CT

    Im sold! I will be using this on my wife's 33 Chevy 3 window for sure. Now about my car; I will probably be the only one to ask this especially on this site.:rolleyes: Has anyone used it on a glass car?
     
  21. Hackerbilt
    Joined: Aug 13, 2001
    Posts: 6,249

    Hackerbilt
    Member

    My wondering about the potential for burning had more to do with wiring shorts possibly igniting the car due to close contact with the tar. Seems like people completely cover the inside of the body with this stuff!

    Certainly there ARE more ignitable areas, but usually only in select places like the seat or carpet. This stuff goes everywhere!

    Hey...no harm in asking! LoL
     
  22. sierra rod shop
    Joined: Feb 16, 2011
    Posts: 381

    sierra rod shop
    Member

  23. Jake H.
    Joined: Sep 16, 2003
    Posts: 489

    Jake H.
    Member

    I actually used this stuff to seal a minor roof leak over my garage, which is, ironically, its intended purpose. It works great, and has stuck to my asphalt roof shingles no problem. That was two years ago.

    A couple months ago, I needed to seal up a couple firewall holes from the inside on my car, as well as around the gas pedal rod, and I spotted the remaining roll of peel and stick on a shelf.

    Slapped it on, and it works great. This shit DOES NOT like to come off after it's in place for awhile. I'm sold and will use it as a sound deadener, now that I know a bunch of you other yayhoo's already did it, too!
     
    JeffB2 and rjones35 like this.
  24. Ole_Red
    Joined: Jul 29, 2009
    Posts: 596

    Ole_Red
    Member
    from 206, WA

    do you happen to know of something that is inexpensive that will work for the hood?
     
  25. RagtopBuick66
    Joined: Dec 12, 2011
    Posts: 1,180

    RagtopBuick66
    Member

    Maybe not the most FINANCIALLY feasible solution, unless you were planning on installing this stuff for a living, but...

    I used to lay a lot of ceramic tile, and one product that I've come across on more than one occasion is a thin mat that you mud in under the tile, with an electrical cord that is left exposed near an outlet. You plug it in and it warms the tile from beneath so that you don't have a cold floor in the winter.

    If you could secure it to the underside of the floor pan, say, with magnets or something, then plug it in and let it heat the floor of the car one section at a time, you might get a pretty good bond. OR, you could just set the mat on the floor and lay out your strips on top of it to get them nice and warm.

    As far as warming a whole roll, I would say just pick up a cheap electric blanket out at Wally World, wrap the entire roll in the blanket and set to HI. Of course, the blanket is going to more than likely get messed up, but again, none of this is really "cost effective".

    A quick search online brought me this;
    http://www.thermosoft.com/radiant-floor-heating-products/shop/thermotile-120v/
    http://www.thermosoft.com/radiant-floor-heating-products/shop/thermofloor-120v/
    but you can actually buy this stuff at Lowe's or Home Depot just a few aisles away from the Peel-N-Seal. But this will give you the general idea.
     
    Last edited: Jun 30, 2012
  26. Chuckles Garage
    Joined: Jun 10, 2006
    Posts: 2,365

    Chuckles Garage
    Alliance Vendor

    I'm surprised there are so many people using this stuff and getting good results. The FatMat and Peel and seal are exactly the same thing, a tar based roofing material. The FatMat is just rebadged. These tar based "sound deadeners are far less effective than butyl rubber based deadeners like Dynamat. The adhesives used are also inferior. In my younger, more frugal years, I tried using the Peel and Seal a few times only to be disappointed later on when it would always fall from vertical surfaces, and had a 100 percent adhesion failure rate inside the doors as well. I have been using the Dynamat on my own cars, and customers as well without any problems. Is it more expensive....yes, but in my opinion, it is a far superior product.
     
  27. OoltewahSpeedShop
    Joined: Oct 18, 2007
    Posts: 3,103

    OoltewahSpeedShop
    Member

    I've used both and see absolutely no difference, other than the ridiculous difference in price. Any local roofing or insulation company will have this stuff in stock at a discounted price even over the "Big" hardware stores.

    How Dynamat has stayed in business is a mystery to me. It's nothing but re-labled generic roofing material. Period...!
     
  28. Blake84
    Joined: Feb 4, 2012
    Posts: 760

    Blake84
    Member

    I feel like someone needs to put some down on an old fender or body panel and light it on fire. Video tape it and then we will know what happens.
     
  29. Da Tinman
    Joined: Dec 29, 2005
    Posts: 4,222

    Da Tinman
    Member

    I dont see what the fire rating matters. You lay this stuff down, then lay carpet padding (flammable) and then carpet (also flammable).

    Why does it matter if the underlayment is fire retardant as there is a lot of stuff to be burnt up before it gets to it.
     
  30. Hackerbilt
    Joined: Aug 13, 2001
    Posts: 6,249

    Hackerbilt
    Member

    You guys are all correct...I was thinking too hard! :D
     

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