My headliner consists of a vinyl material glued to a thin plywood
panel fastened to the coach roof with edge battens and screws.
The vinyl is sagging and discolored and in need of replacement.
I can clean up the plywood panels and reuse them and I have a source
for the headliner material.

My question is about the adhesive. I've gotten suggestions that range
from Henry's Vinyl Tile Adhesive to 3M's 777. I'm looking for the best
product with the strongest bond, no bleed through and little
outgassing. Any suggestions?