the 68 I am working on came with a sound deadener fit. my question is does it go paper side up or down. or are you using modern sound deadener like fat mat or dynamat products

 

I assume this is on the floor, then it's paper side up...
I am installing Dynamat Extreme...
Dynamat 10455 18" x 32" x 0.067" Thick Self-Adhesive Sound Deadener with Xtreme Bulk Pack, (Set of 9) : Amazon.com : Automotive

 

are you replacing the jute firewall pad with that also?

 

Yes, I am.

 

thanks for the input. I am going to do the same thing .had to convince the owner this would be better. I found another brand called GTMAT that is 80 mill for the fire wall .and some regular 50 mill FATMAT for the floor.

 

I made mine even quitter by using the Dynamat with the original jute type padding on top. I also put the Dynamat on top of the rear inner fender wells, under the rear seat and in the doors. That makes for a very nice and quiet ride!

 

I did that too.not the doors though.

 

Older thread but I just went through this one myself.

Pulled the entire interior out to patch some rust spots in the floor, sealed it up, POR'd it, and layed down sound deadener through the whole interior. I bought 50 sq ft of GTmat on ebay for about $100 shipped. It's 80 Mil and went down easily enough. Make sure the car is warm inside and out when you do it because one of my doors wasn't warm enough and the mat fell inside when I took it out for the test drive (and stuck to the window. Darn near impossible to get off and re-apply in the right spot!).

It was about 1/2 the price of Dynamat for the same thickness and amount. I did it for two reasons: noise and insulation. It worked well for both. The car is significantly less noisey and the floor hump doesn't get hot anymore like it used to.

I covered the floor entirely, did the inside of the outer door skin, the quarter panels inside the outer skin in the passenger compartment, and replaced the factory panel board behind the rear seat with a piece of 1/4" wood covered with the stuff on the side facing the seat. No more squeeks, rattles or drones. If I ever remove the headliner I'll be sure to hit that area as well.

Probably the biggest improvement to the comfort of the car I've done to date. Highly recommend it for the cost.

 

I used rubber roofing from a local company that was as thick if not more than the gt mat rubber they offered.
I used a can or two of 3 m spray adhesive to fasten the rubber then used the factory sound deadener on top of that
watch using an asphalt product, you may be stuck with an odor you cant get rid of

 

so far there hasn't been any odor. that said it's only been a week but i did drive it yesterday for a couple of hours and didn't have any smell.