We will make our own headliner if none is available and/or we have fabricated a custom roof then a custom drop down headliner needs to be made. We start with water resistant card board and cut a few section and fold it in place. Using masking tape we get roughed out.
As seen a few specific areas are marked to get us some references points and we are ready to do our first fit inside the vehicle.
Using the Jiffy steamer we can pretty much tell the cardboard what to do with little manipulation by hand. After about an hour it has taken shape and is ready to trim and start the foam work.
Special headliner foam that will tolerate the gravity of a constant pull when installed in the vehicle is used. 1/2 thick is what we use. It is now ready to be covered and attached with special fasteners to finish it out.
We went on to the door panel and fitted arm rest to the truck