After some initial delays, the workers worked hard and got the (big!) job done in a timely manner and cleaned up well. The roof leaked with the next rain and we had to call them out to fix their work twice for leaks in the same area within a couple months. As a result of the leaks (which didn't leak before the roof was replaced), there were watermarks on the cedar plank ceilings, which Preferred saw, took pictures, and did not address or fix. Also unfortunately, the workers tore a screen on our screened in porch, and it took more than a half dozen calls and eight months for them to fix it. We sold the house last month and now - fifteen months after the new roof was installed - the new owners are saying the roof is leaking again. Just unacceptable. They seemed very nice, but ended up being non-responsive, expensive, and not quality work.