I'm working on the motorhome, but thought this would be of interest in general, so here ya go.
There are probably 100 ways to do a ceiling. What seems popular is doing wood slats, always a crowd pleaser. For a 26,000 bus, the weight would not matter much, but an 8,000lb motorhome, I want something lighter.
Also without a tall ceiling, using 1/2 thick material is not ideal.
Seen a lot of carpet done for vans. Plastic panels in motorhomes too.
Having mulled over all kinds of ideas, I think I hit on a good one, which is using the cheapest vinyl sheet flooring. It is fairly tough stuff (the cheapest stuff however it terrible for a floor, this isn't for a floor..)
The key though, is to use the BACK of it on the outside, as it is white and has some texture to it.
I think that is my plan.
Wanted to throw out the idea and see if it sticks so to speak.
Let me continue...also thinking of painting it with some stripes to give it more jazz, some thin black lines.