ok,
Results of time and motion studies
First off I did the downstairs traditional.
Timed on the kitchen door, which is a half georgian one-10 panes of glass. 2 min 45sec
rest of downstairs windows (bar 1 that needed a pointer ladder to get too and I couldn't be bothered
) which is another 4 windows-3 of which are the sadolin stained, 2 panes of glass type window, and the other one also has just 2 panes of glass, but the one pane is an opening light along the top.
Including the door, which makes 5 windows, time taken was; 6.06 min
Did whole house with WFP (apart from back) 5 upstairs windows (2 panes per window) and 7 downstairs windows (including the whole of the front door and the window I would have needed a pointer to get at.
Time taken 4.40 min
1 minute and 26 seconds faster for 7 extra windows.
Individual time for a single window.
28 seconds trad
11 seconds WFP
The same ground floor window.
Niether method was done at race speed, but trad was done at a 'busy' pace, frame wasn't cleaned, sill had light wipe over, edges had a very quick detail.
WFP was at normal working speed using roughly 2l per min and included everything.
Must say that I was genuinely surprised just how much faster WFP was on a ground floor window.
Ian