I'm still in the process of stripping the quattro, but I'm starting to think about the rebuild and what insulation I need to use on the doors, floor and roof.

 

The factory under-carpet foam is in decent condition but it has been wet for a while and is a bit smelly, so I'm thinking of replacing it.

 

I'm after some advice on what to use. I'm thinking I'll Dynamat the doors as that made a big difference in my Skoda, but is Dynamat the best thing for the floors and roof as well?

 

Dynamat and something else between it and the carpet?

Any advice is appreciated.

 

 

Some interesting stuff on Ebay

http://www.ebay.com/itm/10-SHEETS-10sq-ft-Car-Vehicle-Sound-Deadening-Insulation-Proofing-Pads-Foam-/262015528932

 

http://www.ebay.com/itm/Amazing-Sound-Stop-Foam-Sound-and-Heat-Insulation-Foam-/310160210121

 

http://www.ebay.com/itm/Butyl-Rubber-Foam-Style-40-x40-Car-Sound-Noise-Insulation-Muffler-Silencer-Mat-/171893169331

More info on my car, build etc.

 

http://autoclique.co.nz/category/projects/robs-audi-quattro/

Flashing Tape is usable, couldn't really tell you how much difference it's made as its not finished het

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I use 6mm bitumen sheet followed by 10mm closed cell foam. Makes a big difference over the standard insulation in British 60s/70s cars. I'd imagine standard Audi insulation is better but I reckon it's be on par with that.