Metal roof flashing is critical for standing seam roof applications because the metal roof is not attached using screws along the panels. Metal roofing panels are either seamed or attached using concealed brackets. The only place the metal roofing is attached using screws is along the ridge vent. This allows for the metal roof to expand or contract vertically all moving from ridge to eave or fascia.
The most common flashing for standing seam roofing is the ridge cap, which is used at the peak of a roof where two opposing roof slopes join, and attaches to the roof with z-flashing. Other flashings that attach with z-flashing include transition flashing, end wall and sidewall flashings. Eave flashings include gable flashing, which runs up the sloped ends of the roof, and drip edge, which trims out the lower ends of the panels and provides a surface for the attachment of the lower end of the panel. Both gable flashing and drip edge are often applied above fascia trim, and may be attached with either surface screws or hidden eave cleats.
As you can see metal roof flashing is extremely complicated and it is essential to choose a company that can bend and fabricate their own flashing such as Global Home Improvement. 99% of leaks occur where there is flashing, along the walls, gables, drip edge, siding and even skylights. Make sure that this doesn’t happen to you!