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I used Frost King and it made some difference but I still had noise transmitted throught the storage compartments in the hatchback area of my coupe. I bought 4 2' X 4' fiberglass drop ceiling tiles at Lowe's (not the fibrous carboard looking type) and cut them to shape to fit the bottom and sides of all three compartments. I applied FK over the top of the cut to shape tiles to minimize fiberglass particles. The noise drop was substantial.
I used Frost King and it made some difference but I still had noise transmitted throught the storage compartments in the hatchback area of my coupe. I bought 4 2' X 4' fiberglass drop ceiling tiles at Lowe's (not the fibrous carboard looking type) and cut them to shape to fit the bottom and sides of all three compartments. I applied FK over the top of the cut to shape tiles to minimize fiberglass particles. The noise drop was substantial.
Charlie
I am glad to hear that filling the rear compartments with insulation helps. With the exhaust running directly under or near these compartments it seems like they would be like a speaker cab just
increasing the droan. Have been thinking about doing this for a while and just happen to have some of those ceiling tiles. thanks
For a little more cost than FK from a home improvement store, you can get a pre-cut kit from Crazy Cowboy (forum member) http://www.exoticvette.com/insulation%20c5.htm . It comes with great directions (tear down as well).
This whole thing is a layered approach. Most people that don't worry about weight, add multiple layers of DampPro or the like. Some have added literally hundreds of pounds to the curb weight.
The FK is a very good (and lightweight) start. You can then add the Luxury Liner, like Kale suggested. Or some Overkill over the FK to stay light. You have a whole bunch of options.
...I bought 4 2' X 4' fiberglass drop ceiling tiles at Lowe's (not the fibrous carboard looking type) and cut them to shape to fit the bottom and sides of all three compartments. I applied FK over the top of the cut to shape tiles to minimize fiberglass particles. The noise drop was substantial.
Some have even put fiberglass insulation in trash bags and filled the compartments as they do resonated a great deal of noise. Spray or brushed on applications under the wheel wells, on and on. It just depends on how much weight, how much time/effort, etc.
The above idea is a good one, again to keep the added weight down and sticking to the KISS principal. But, overall, the idea in deadening is generally adding weight to keep down the vibrations.
I have not wanted to add too much weight and have had trouble finding a good compromise. I added DampPro to the doors (to help the audio) and FK (Crazy Cowboy kit) front and rear. I have some Overkill that I might add as well, but not sure.