East Penn Roofing LLC East Penn Roofing is east Pennsylvania's leading residential and commercial roofing experts. East Penn Roofing can install and repair virtually any type of roofing system for both residential and commercial clients. We strictly adhere to the current IRC building code and our factory-certified Installers and project managers will go above and beyond on each and every project to ensure the value and integrity of our service. We only use quality materials backed by manufacturer's warranties and all of our work comes with a workmanship warranty provided in writing.