Our insurance company was very picky and asked us to get chimney metal liner installed. I called Wilkens to get a quote. They were very quick to respond and send someone. Even though I screwed up the schedule first time, they still came back another day I was home. The guy who came was super polite and nice. He inspected the chimney and gave us a quote but told us he wouldn't recommend it since it's an older house and the chimney is too narrow. He also told us that the code doesn't require us to install the liner.
We had to argue with our insurance about that and they even called Wilkens to confirm it and finally got it resolved. Wilkens didn't charge us for any of that and I am very grateful for their service.
I wouldn't hesitate to call them if we have any masonry work in the house.