Kirtley Roofing & Sheet Metal LLCKirtley Roofing & Sheet Metal meets growing demand for TPO roofs. By Kat Zeman, Senior Editor at Knighthouse PublishingWhen it comes to roofing, PJ Kirtley knows his stuff. His vocabulary is peppered with terms like “low slope,” “built up,” “modified bitumen” and “thermoplastic polyolefin.” 15 October 201911 January 2024 Admin 1 min read Exclusive Features