We are very satisfied with our concrete surfaces (ceilings and partly walls)! A small tip: Make sure that, for example, the plasterer and/or painter uses proper tape on the concrete surfaces (if necessary). We now have tape residues on the concrete. We hope that since the tape is/was grease-free, the residue is merely moisture and will no longer be visible in the near future, but you can now specifically point this out beforehand! Otherwise, as always: super cool "place"! Continued success!