Always appeared to be a underseal alike sort of thing - like a textured paint that would give that effect if applied with a roller.
Assume though that they sprayed it on. Have seen some which appear bitumous too but they set.
Kevin , just use 'stonechip', but make sure that you apply it in thin coats only allowing plenty of time for it to dry between coats. the nozzle and air pressure will determine the amount of 'ripple' finish you get. If you buy it in cans then the surface can be smooth. You need to prime and top coat over this as it is not waterproof in itself. If you need a supply just PM me.
I think you need Bonda stonechip, from Bondaglass-voss ltd 020 8778 0071 the container has a screw top to take a shoults( not sure of spelling) gun. I haven't used it yet but I asked if it left a contoured finish as original, and was told yes. I think it's the same as I bought before, and that was spot on. Will be doing this job soon if you want to wait for a definitive answer!
original finish inside lcv was not just painted steel
also my saloon has the original floor pans and paint inside, and it does have a ripple or stipple finish and not flat
I suppose so - light surface rust only, and treated/painted over by PO - but some of my floors are smooth - and they are original panels as far as I can see.
Well, who knows what was done all those years ago. All that I've seen though have a contoured finish, I think it was a sound deadening exercise, applied before the final paint.
Stonechip, but you do need the type that will take paint, visit my site the photos page of BMF where you will see the cab before after and finally with paint, click the images below