I called Mr Roofer to deal with my lower roof and he gave me a reasonable estimate. I had another estimate and it was close but he said that there would be additional costs for sheathing that he couldnt estimate till the roof was off. I called Mr Roofer back and he told me that this was normal. He is always prepared to replace some sheathing. It wont be extra. True to his word the bill was the same as the estimate even after additional sheathing was required. The only issue I had was not knowing when they were coming and getting a call saying they were coming that day. The upside was that they were done the same day and didn't leave a mess. They even left a bundle of shingles for any future repairs. I would recommend.