R Kaller & Sons have done 2 jobs for me. They installed new flashing and replaced a number of slate tiles on the mansard roof of our historical property. They also replaced the crown on the chimney. It's not easy to find roofers who can do this very skilled work. They took the time to consult with us on our options and were very fair with pricing. The second job they completed well ahead of schedule. Chuck is trustworthy, accommodating, and a good communicator. Top notch quality work, thank you!