this does not make any sense to me at all, if you are wfp, why?? not do the frames at the same time, it only takes a few seconds extra?? the whole point of wfp is the benefits of this system, keep it simple, clean the glass, doors, frames, and garage, this is what splits us apart from trad, the custys i have would never look back after seeing what wfp does, it is working great here in scotland, my personal opinion is, if you split wfp in to sections, you are leaving yourself vunarable to the old method, (trad) to step right back in,