As I write this, the spring rain is pouring down on my house. I'm happy, though, because Mark Cox installed my new skylight. My old skylight was a Brand X 30 years old. I saw Mark's great reviews and called him, and couldn't be happier with this work. He takes great pride in doing a good job. My job was a complicated retrofit. Mark communicated with me every step of the way to ensure I'd be happy. I don't think I could have had a better installer. I hope Mark is still around when I replace my roof.