Joachim1905
2024-05-21 11:24:59
- #1
Hello,
the concrete on the ceiling of my prefabricated garage is flaking off slightly. I have already removed it, but it keeps coming back.
What is this? I need expert answers.
What can/must I do about it?

the concrete on the ceiling of my prefabricated garage is flaking off slightly. I have already removed it, but it keeps coming back.
What is this? I need expert answers.
What can/must I do about it?