I heard about John's service through co-workers. John was very professional in both his work and service. Received quick replies to questions, and he completed the job as promised. It was a very difficult job (stairwell) and the results were outstanding. Took great care to protect the rest of the house. He also followed up later to make sure we were satisfied and assured us that if we found anything wrong, he would be more than happy to come back, looking for 100% satisfaction.