I had them install a mirror in a garage gym. The installation technician came out earlier in the day because I had concerns about the wall. He let me know what I needed to level it out, and when I wasnt quite done putting the plywood up by the time he got back for the installation, he and the other tech leant a hand to finishing it. The mirror looks phenomenal, he answered all my questions, and I couldnt be happier with the result.