Just had this nice vinyl sliding door installed last week. Look at this piss poor job of sill flashing! Why would they taper the side flanges?! Oh and there's no back dam so what's going to stop water from rolling under my flooring?!? Unbelievable and I'm so PISSED at myself for not catching them on this!! Where I drew arrows in pic between the hardwood floor there's a gap about 3/16" between flooring and door and I can see the plywood subfloor! That's when I realized the flashing they installed was likely improper without a back dam which should butt right up to the edge of flooring. Correct me if I'm wrong please!