33-34 Sound Deadening Cloth Materials

[My3window]

I'm in the first stages of reassembling interior parts in a freshly painted body. I'm wondering about the cloth materials Ford used in between the wood to wood and wood to metal pieces. For example, when I removed the header bows that screw to the wooden frame around the doors, I removed what looks like a lightly oiled thin canvas material which I presume was used for sound deadening purposes. There are other places where cloth materials were used in between fastened parts-like in between the wooden rear window frame and metal body.

Does any one know the kind of material used and can the materials be purchased through an auto upholstery business?

Thank you