Joe gave me two estimates, one to replace the wrinkled vinyl with new vinyl, and one to replace it with wood. He knew about the problem of north-facing being wrinkled by reflected sunlight, and he researched solutions. He advised, correctly I think that the only two solutions are wood siding and full-window screens on my north neighbor's windows. Joe's estimate for replacing vinyl with vinyl was half the price of the other estimate I got, and the other contractor wasn't familiar with the problem and didn't suggest alternatives. I opted for wood siding. Joe scheduled me quickly, was considerate of the neighbor -- whose driveway he needed to work in -- came on time, did the job on time, and did a great job. The wood replacement siding looks pretty good next to the vinyl that's still there, as Joe predicted.