The housekeepers Union went on strike.
20 years ago I was painting a big church built in 1889. We had to wash the textured walls before we could paint so we could have good adhesion. All of that soap and water broke down the texture, and revealed that the walls were originally all mosaic fresco*.
So we scraped off a 36 square foot area and showed the Priest. He said, "Cover that back up. The people will want it returned to the original mosaic, and we are a very poor parish and have other priorities right now."
Good call. For Kicks I figured out an estimate on what it would take to strip the texture off the walls, and at well over six figures I was still nervous that that amount of money would not be enough to do the job.
Later some older parishioners approached our crew with pictures from the 1940s - color pictures of weddings and baptisms- and it was truly magnificent. Mosaic wooden ceiling, the mosaic fresco on the walls, and mosaic tile on the floor.
* a fresco is when you put plaster on the walls and while it's still wet, paint it. The paint becomes deeply embedded into the wall and can last a long time. That was Michelangelo's MO . Most mosaic patterns are done with a stencil.