If you don't want a permanent damage on your property-AVOID THEM.
Their attitude toward work was unprofessional. Their convenience and preference come way before customer satisfaction. We were dissatisfied with their poor workmanship but they did not want to listen to us and instead tried to make up excuses which you would never believe if you are educated customers. Overall our big investment turned out to be nothing but a huge waste of time and money. We were forced to hire another contractor to reverse the damage done by them.