Thanks @theluthier – yeah that’s my own concern as well. The walls ARE divided into roughly-square UV islands, which can be stacked, rotated etc on top of an image texture; but I don’t know how much detail would be lost or how noticeable repeats with a tileable texture would be. Today I’ll try playing around at making one and see how it goes, but if @spikeyxxx has more expertise in this area I’d welcome any advice he had to give.
What size image texture are we thinking about, for this? 1024, 2048? Bigger, smaller?