Jennied Flashings

The vertical barge component (part b) can be cut to the curve and edge seamed using a by a Jenny edger, with the horizontal component (part a) hooked and seamed together. (See Tools Of The Trade.) 

Shallow curved flashings can be folded straight in one piece and crimped on both edges. Fix the turn down at the curved rib by' mini-crimping or 'gear-crimping'. The Jenny tool can also create a limited curve.