Is having a new construction window with integrated J channel a good thing if you are using hardy plank or cedar shake siding? Also I am using a geometric window (circle top). Aesthetically would a window without the J channel and having the siding butt up to a casing be better.
Does the J channel help out if the window is properlty installed?
As Tom's link shows, it can be done, but it would not be my choice. They still call for additional flashing on the top and bottom so it would seem like a waste to me... and probably look kinda weird. I prefer the look and functionality of separate trim around the window.