You can test for vinyl by giving a pinch to the roof.
Orange peel roof.
Every texture requires a different process to get smooth ceilings.
Epdm is very smooth while tpo may be slightly bumpy similar to an orange peel.
Vinyl is also used for the roofs of campers and rvs.
You may need a stepladder depending upon the ceiling height.
The end result is a beautiful flat ceiling.
As it is a friend s car i would like to help you solve it.
Apply the orange peel to the ceiling keeping the gun between 3 and 4 feet away from the ceiling at all times.
The after sales of the brand decided to do a sanding and polishing to remove however the orange peels continue the roof is entirely scratched and now some small marks have appeared.
Keep moving the gun.
The clear coat on the roof came with a lot of orange peel.
Repairing orange peel texture with a hand pump sprayer series real painter spraying.
An epdm rubber roof will also take on a chalky look.
My wife had some heavy scratches on the roof of her car that would have led to a big expense when she returned it off her lease so i figured why not give wet sanding a shot.
If you want to totally get rid of orange peel you need to wet sand the car.
It s not hard but does take time and can be scary.
Just because a roof isn t aluminum or fiberglass don t assume its rubber.