I ordered the Alcantara with foam pre-applied. It's the equivalent of 1/8" Landau (2 mm) which is what I was originally going to use. Specifically for hard panels and headliners:
https://www.upholsterysupplyusa.com/...ft-foam-backed
I am not clear on whether the foam is applied in Italy or by the guys in California but the ease of use appealed to me. I am going to spray Weldwood Landau adhesive out of cheap HF gun.
https://www.amazon.com/Dap-Weldwood-...4083990&sr=8-1
https://www.harborfreight.com/32-oz-...zle-56981.html
I ordered a gallon so I can do my dash and door panels and anything else I can think of. I've been watching a lot of videos on the subject matter and although you can use the aerosol cans most of the YouTube upholsterers use the Weldwood (or something similar).
I am by no means an expert but I am going to give it a go. I have leather, fabric and carpet coming from Relicate for the remainder of the car so I am on a steep learning curve!