Mike Spencer(design specialist) did a great job diagnosing the problem and did not pressure us. We came up with a workable agreement. I was not in house when the work was done, however, there was no dust or dirt left behind. My husband stated that they did a wonderful job of hanging cloths, floor mats etc. to prevent and dust or dirt problems.I was pleasantly surprized and would not have known the crew was even there if I hadn't seen the results. Thanks to the great employees who did the job.