I learned that no matter how nice a wall looks during the daylight hours, it is totally something else at night, with the lights turned on. Even if you have to use a flashlight, shine it upwards on the walls for a good check. We have wall lights that illuminate both top and bottom and boy, do they show every pimple and dimple. I wish I had done this prior to paying for it. Do a visual check at night with a good light! trex

Thanks for the advise!