Wiktionary
marouflage
n. A technique for affixing a painted canvas to a wall to be used as a mural, using an adhesive that hardens as it dries such as plaster or cement.
Wikipedia
Usage examples of "marouflage".
To be blunt, Marilyn and I made smiles, after a desperate painting session in which I marouflaged canvases onto wood for future masterpieces and laid my first touches on the Song Ping.