My factory Yellow, later black and now BU40 Blue Bermuda Europa S1A will be driven over poor roads of which some are gravel roads. At the paintshop we decided that we would leave the floorsection and wheel bays bare to be later coated by me in anti gravel black. This to save costs as it was already the most expensive body work of all the cars I've ever restored in my life.
Now it is parked in my garage I find the idea of black wheel bays and floor less appealing and would like to have them painted in baby blue like the rest of the car. However with long sections of gravel road and quite often tall grass in between the two gravel tracks the sand blasting and brushing of the bodyshell would be threatening.
Is there an undercoating which can be painted over which will protect the fragile fibreglass as best as possible? I presume it should be a hard coating as opposed to a flexible rubber like material.
Any thoughts?
I also thought about lining the inner wings with a 20cm wide strip of the same material which is used in modern cars. Some kind of fabric or carpet I think.