I've got the interior out of the car and noticed two pieces of underlayment beneath the carpeting. The first layer a brown fibrous material. The second layer had a asphalt layer bonded to a heavy multi colored jute I believe. The first car I did there was only dust, crumbs and rust under the carpet.
The questions I have are:
1. Not sure exactly what these different materials are or where used for.
2. Did the deluxe interior have any additional underlayment treatment
3. Lots of high tech underlayments out there on the market. On concours. restorations is it recommended to stick with the older original applications.
I was able to salvage most of the pieces I think they could be re-used or replicated to keep the originality.
Thank you,