I have acquired a shop space that is a room inside a much larger building. The room in question is about 30' x 30' (Not sure as I haven't measured it yet), and the entire room - ceiling, walls, and floor - are concrete. The problem is, the building is not climate controlled, so there is no A/C in summer nor heat in winter. The paint that had been used is all peeling off everywhere. Is there anything I can apply to the concrete surfaces that won't fall off in this space and won't cost a ton of money? I'm asking not just for myself, but for the owner of the building, who would like to find something to use in all the other spaces of the building.