Window Door Flashing for Pole Barns

Does anyone have a clever or stock answer to providing flashing for new windows and doors in a Pole Barn? My siding is flat with vertical grooves extending outward every eight inches or so.

Thanks!

Buck

Just go to the local lumberyard, tell them what you need and they will be able to help you out.

When my pole barn was built, just had the garage doors and one enty door put in, later we added another walk in door and eight windows, cut the holes in the metal, put the framing in, added the trim and window, looks like they were always there.