Join Date: Jun 2016
Location: Orange County, CA
Chassis: Crown Supercoach II (rear engine)
Engine: Detroit 6V92TAC, DDEC 2, Jake brake, Allison HT740
Rated Cap: 37,400 lbs GVWR
Surely the main consideration for bus conversion interiors should be ease of cleaning / hygiene and creating the illusion of space? Carpet to me is just like blotting paper - all it does is hold the dirt, dust, germs etc in one disgusting reservoir of yuck. Nasty, nasty! I never understand why carpet is so popular in this country; there is no other nation on this planet that loves carpet like Americans do.
My suggestion is to keep the ceiling a light color to help reflect interior light, and if needed add extra insulation between the original bus ceiling and whatever you choose as its final covering. I'll be using 1/2" polyiso insulation against the metal ceiling, then white FRP covering it - simple, easy to wipe clean, never needs painting, mold- and mildew-resistant, and won't split/warp/crack/swell/shrink like wood does. This will be about 5/8" total thickness, not enough to affect headroom noticeably, but enough to prevent condensation and chill in the Desert Southwest where I'm likely to be taking my bus. (I also have the probably-useless original fiberglass insulation inside the roof, plus I've painted my roof with the magic pixie-dust insulation powder in the paint, plus most of the roof is shaded from the sun by solar panels and walkway.)