Sound Proofed 99 today [Archive] (2024)

Thiery

2nd September 2001, 18:47

Since it has been raining for the last four days and expected to continue for at least three more, I decided to sound proof/insulate my 99 Saturday. I normaly drive 90% of the time with the top down so the noise doesn't bother me. My tires are 15/50/195 Michelin Pilots, which is probably most of the outside noise, but I like the way they handle.

I always use a product called peel and stick (layer of crinckled foil, layer of synthetic tar, layer of butcher paper you remove) that runs about $14.00 at the roofing supply house. I,ve tried different widths but one roll of 6" width is enough to do the whole car and easiest to work with. Also stop and get a large package of single edged razor blades.

I started in the trunk doing all the horizontal surfaces including the spare tire well, the protective plate by the gas lines, and the back side (inside the trunk)of the package tray. I then did the inside surfaces of both doors, including door beams. Be sure that the peel and stick, which is very sticky, contours to each surface as close as possible.

The results as always were fantastic.

(1) The stero sounds much better.
(2) The doors now close with a thud instead of a clank.
(3) The interior noise reduction was reduced by at least 20%.
(4) The car feels tighter and heavier, even though you added only about 7 pounds.

If you live in an area where you have to have the top up, or if the noise just bothers you. You might want to consider this mod.

Total time about three hours, total cost about $15. It was a great rainy day project.

charles soong

2nd September 2001, 19:21

<BLOCKQUOTE>quote:<HR>Originally posted by Thiery:
Since it has been raining for the last four days and expected to continue for at least three more, I decided to sound proof/insulate my 99 Saturday. I normaly drive 90% of the time with the top down so the noise doesn't bother me. My tires are 15/50/195 Michelin Pilots, which is probably most of the outside noise, but I like the way they handle.

I always use a product called peel and stick (layer of crinckled foil, layer of synthetic tar, layer of butcher paper you remove) that runs about $14.00 at the roofing supply house. I,ve tried different widths but one roll of 6" width is enough to do the whole car and easiest to work with. Also stop and get a large package of single edged razor blades.

I started in the trunk doing all the horizontal surfaces including the spare tire well, the protective plate by the gas lines, and the back side (inside the trunk)of the package tray. I then did the inside surfaces of both doors, including door beams. Be sure that the peel and stick, which is very sticky, contours to each surface as close as possible.

The results as always were fantastic.

(1) The stero sounds much better.
(2) The doors now close with a thud instead of a clank.
(3) The interior noise reduction was reduced by at least 20%.
(4) The car feels tighter and heavier, even though you added only about 7 pounds.

If you live in an area where you have to have the top up, or if the noise just bothers you. You might want to consider this mod.

Total time about three hours, total cost about $15. It was a great rainy day project.<HR></BLOCKQUOTE>

Aren't you concerned that the sticky paper will gum up your car and lower the resale value?

Sheldon

2nd September 2001, 21:23

I'm sure that they strategically placed the tar paper (same or similar to Dynamat) behind all the trim panels such that none of it shows. Thus no one will ever know, unless they take the panels off.

Similar to what I did with 2 cans of $4 dollars a can waterproof undercoating. No cutting or razor blades required, just spray very carefully. http://www.miataforum.com/ubb/smile.gif Dries after a day or so and feels like black paint to touch.

[This message has been edited by Sheldon (edited 02 September 2001).]

Thiery

3rd September 2001, 12:43

Charles:

This is not sticky paper, it is insulating material. If anything it adds to the value of the car by making it feel tighter and quiter. Even though you can't see it, if you could it would give the car a much more finished look.

Sheldon: I tried the undercoating once, but could not tell much difference afterwards. And even though tried two kinds of undercoating, they never seemed to dry completely. The changes the peel and stick make are much more dramatic.