Sound deadner for the roof

[Rodney Bullock]

I am having a headliner put in an old car and would like to know what folks are putting inside the car before the headliner is installed. I took some of that soft tar like material off the top and cleaned it however I need to go back with something that is not to heavy. What have you all used? Dynamat is to heavy for the roof, that's more for the floor and doors. any suggestions welcome:)

[Norm's Coupe]

Rodney, I used a roll of insulation JC Whitney sells for under carpets, and walls of vans, and roofs. It has aluminum on one side and the other is just the plain mat. One roll did the roof of my coupe and the cost was only about $30. Aluminum foil side faces in toward the interior, mat side to the metal. Used 3M number 77 spray adhesive to adhere it to the roof. Took one whole can because you have to really soak the insulation with it. Don't need any adhesive on the roof itself. Just spray a good coat on the insulation and stick it up on the roof. I did cut it down into small sections so I could handle it without getting the adhesive all over everything, and me. Then sealed the joints with aluminum tape, also purchased from JC Whitney. Really took the tin sound out of the car when shutting the doors and it's quiet in there now.

[Lou Earle]

I put dynamat type - cheaper imitation - in doors roof etc and it makes a huge difference in sound lever-I put the dyna matclone the thin foam insulation over that- the Dyna mat is self adhesive and the I used 3 m glue to install the insulation- remember the Dyna mat do not need to cover the whole surface area- the instructions explain

Lou

[Norm's Coupe]

Actually, now that Lou mentioned it. I didn't cover the entire area under the headliner either. The whole roof is covered, but didn't put the insulation on the upright section between the quarter windows and the rear window. Had enough left from the roll, but didn't feel I needed it, because there was no insulation there when I removed the headliner that I remembered.

[hotrodbob]

There is a aluminum sided bubble pack type insulation sold in building supply stores that works well and is very light wt.

[hkestes41]

There is a guy here in Texas that sells a reasonably priced insulation. I have not used the product but have heard some good feedback. He is also an alliance vendor on the HAMB so if you are an alliance member you will get a 10% discount. The link is below.

http://www.lobucrod.com/

[hkestes41]

Remembered seeing this test report and had to do a little searching to find it but has a lot of good information on Insulation.

http://www.sounddeadenershowdown.com/

[Lou Earle]

Remember the sound /vibration absorber products- Dyna mat have little insulating value. There is not even an r value assigned.

The insulation sold in hardware store is of the large bubble variety and not very good- been there done that . There are close cell thin insulation mats sold on the bay reasonable and the work great.But again remember u need both th get quieter ride and heat or cooling qualities.

Lou

PS-- here is the type of insulation I found o be the best- and easy to install

http://cgi.ebay.com/ebaymotors/Insulation-And-Sound-Deadener-40-square-feet_W0QQitemZ280184532188QQcmdZViewItem?hash=item280184532188

[bobby horne]

In my 38 coupe, I used headliner insulation that I took out of a Mustang, and a Cougar I junked. I use windshield sealant to hold it in place. Has been in 2 years now with very hot summers, looks good.......

[bob westphal]

I used a felt material that my upholstery shop uses. Glued it in with spray glue on the whole surface. I also just installed the same material that Hotrodbob used in '48 DeSoto sedan. Like someone else said the silver side goes on the outside. Here's where I messed up. The upholsterer installed a perferated vinyl headliner. The silver shows through when the light is just right. If I knew what material was going to be used, I would have painted the surface black.

[greg g]

I have some aluminum heat duct insulation left over form doing the furnace ducts in my garage. It looks like aluminum foil bubble wrap. It is put up with tape that is sold along with it for the porpose. I put it up three years ago and it is 99% still stuck where I put it. I am planning on using it in my Studie when I get that far. Here is something similar, should be available at Lowes, H/D, or hardware stores. This appears to be foil and foam but says its self adhesive. Was about 15 bucks a roll.

[Guest 57plymouth]

I used a dynamat clone called FatMat (before that company used the ugly blue stamping all over it) over my interior. It is inside my doors, on the firewall, the floors, the rear cab wall, and the roof.

I also covered the same in a layer of that thermal barrier that looks like foil covered bubble wrap.

If you think sound deadeners don't work, with the windows up on my truck, you cannot hear the engine running. If you open the windows it is deafening on the interstate. Of course, the stacks put the exhaust right behind your head and the Magnaflow mufflers are basically stainless glass packs.

Here's the cab before I put in the bubble wrap stuff.

http://bacooper.myphotoalbum.com/view_photo.php?set_albumName=album02&id=Interior_3

[Rodney Bullock]

Thanks, all I went with the material that has aluminum on one side and jute on the other makes a nice sound when the door closes.