We have concrete tiles, which are original to the house from 26 years ago. We had a water leak in our kitchen ceiling. Called Ethos and they came by promptly, explained what it could be, and detailed the process for repair. After I received the estimate and approved it, they came out the next day and fixed it. The tiles were in good shape, but the underlayment needed to be replaced. They also replaced some tiles outside of the leak area which were cracked. We're very pleased with the staff and the workmanship. I'll use them again, when the need arises.