Commercial grade flashing for shingle roofing pipe penetrations and electrical conduit / electrical service pipe mast penetration flashings. The two piece “Slide from the Side” design allows for a new roof flashing installation around fixed structures. An Electric Service mast is a good example. Retro-Spin™ roof flashings are roof jack/pipe flashings which will create the rise in a roof system that protects penetrating elements. This American Made design spins open, enabling installation of the flashing from the side. After the structure is centered inside the flashing the installer merely rotates the assembly 180 degrees and secures it into place. The only tool required is a hammer! This design simplicity eliminates taking apart a penetration structure in order to slide an ordinary flashing into place.