Rickjohn Roofing company inc. in Pittsburgh, PA specializes in slate and tile roofs. We are experienced roofers and have been in business for over 34 years. Our roofing services include new slate and tile roofs and roofing repair, as well as all types of architectural and asphalt roofing shingles. We can repair and replace cedar shakes. We also install skylights and ventilation systems and provide gutter installation.