Do you want to clean your own paintings? How much does it cost to have a painting cleaned professionally? Start with this video: https://www.fineartconservationlab.com/projects/in-lab/video-cleaning-a-painting-by-armin-hansen-from-the-monterey-museum-of-art/
While this next video shows the difficulties with removing murals from walls, there’s a part of it that addresses rolling up paintings… this is a VERY interesting vid! https://www.fineartconservationlab.com/taking-off-a-mural-from-a-wall-removing-murals-detaching-murals-video/