Dynamat/Fatmat in Doors ...

[Duffman]

I am to the point of installing Dynamat or Fatmat in my doors. What do you recommend; installing the sound deadener on the inside of the outer door shell, or install it inside the door panel? If inside the door panel, does it screw up the panel attaching to the inside of the door?

Thanks!

[zanthus]

inside of the outer shell. You want it to get rid of road noise right? Thats where I would put it. Also easier to install IMHO.

[ktm]

I installed it both places.

[Duffman]

Bo, was it a problem putting the door panel over it? Did it fit correctly?

[jmark]

inside of the outer shell. You want it to get rid of road noise right? Thats where I would put it. Also easier to install IMHO.

Its where they put it on my 280Z.

[EScanlon]

I agree with on the inside of the outer skin.

The inner skin...wow! that was a chore I'll bet. Whether on the inside of the door surface or on the passenger side of the surface...ouch. I just used an old shower curtain as a vapor barrier, but not for noise control.

Interesting.

E

[240znz]

I'd be concerned about adhesion. Doors are subjected to slamming, flexing, extreme cold/heat and of course water. Water will dribble down the inside of the door, that is why there are drain holes in the bottom.

I'm keen to learn more. Has anyone here fitted sound deadening on the inside of the outer shell and had issues?

[EScanlon]

I did just that, but I applied tar mat (Q-Pad) over freshly cured POR and used a heat gun on the adhesive / mat to soften it up so I could press it tight. I haven't had any problems I'm aware of (no weird rattling, or problems). I also did it on the inside of the hatch, rear fenders, and firewall. The car is VERY quiet, so much so that you can actually hold a conversation AND have the radio on.

Isn't it like 10 am Monday where you are James?

E

[bkelly]

From my experiences, I'd stay away from the mat type sound deadening. Moisture likes to collect on the aluminum surface. My fathers car has the mat type in it and when I had to remove the door panel for an unrelated issue, the aluminum looked like someone misted it with a spray bottle. I like Liquid E-Dead from Elemental Designs. It's a spray in/brush on sound deadener. It's a bit messy and much more expensive, but it won't trap moisture like a mat and will never fall off. Because it's sprayed, you also can get into smaller areas much easier giving you more complete coverage. I used this on a Ranger that I had. The interior was gutted except for the dash, everything sprayed and put back together. When I was done it was as quiet as a Lexus. Here's a link to their page- http://www.edesignaudio.com/index.php?cPath=1_24

[240znz]

Geez Enrique.....busted.....on the net at work....again......yikes.

[EScanlon]

Q-pads don't have an aluminum skin. They're strictly a tar film with a thin plastic film for protection.

James, sorry!! Was asking more on the time difference than location.

E

[ktm]

Actually, installing it on the inner door skin is not that hard. I just placed the sheets over the entire skin and then cut the holes out with a razor.

I did not use Fatmat, but I did not have any interference issues whatsoever with the door panel. The material I used was rather thin, but effective in stopping the vibration from the road noise.

I also sprayed the rubberized undercoating overtop of the deadening on the outerdoor skin to provide complete coverage of the outter skin as well as address moisture concerns.