Finishing in the Bathroom

[Stone Ridge]

I have just started rebuilding a 31’, ’76 International, rear bath. I’ve decided to start with the rear bath and have removed the bulkheads as well as the tub, and shower. I have some questions primarily about materials.

What is the tub, sink/counter and most of the shower made of? Is it the same material that the ceiling (both ends of the interior) is made of? People seem to refer to it as fiberglass. It doesn’t seem like fiberglass to me. I guess what I really want to know is what to use for stopping cracks and then filling the cracks and chips (there are ½” > ¾” on the edges of the tub. The ceiling edge has one or two with 2 to 3” cracks that are about 2”).

What can I use to refinish the sink, tub, counters, shower, and ceiling with? I have read about a material from DIY. It doesn’t come in many colors. It would be nice to find a supplier who would match the original.

What should I prime with?

How are the finishes applied? Brushed, rolled, or sprayed?

I’m decent at spraying conventional enamels and lacquers; I just don’t have any electricity at the A/S. If it’s the only way I could probably borrow a generator, small compressor, gun.

Finally, at least for now, what should I use to calk when re-assembling?

Thank for getting through this,

Stone Ridge