The last time this came up I queeried peoples figures and timings and got a right bashing from all including Sqeeky.
So the last time I did semi's I timed it - boring eh?
Typical semi, upstairs windows - 12 ladder movements, ie place ladder, up, clean, down, move ladder, up, clean, down, move to next window etc, negotiate side gate, move patio table and chairs - yes they've all got them!, do downstairs windows including full patio doors - wiping sills and sides all the way = 3 houses in 2hrs 50 mins.
Its the ladder moving which kills the time and why I desperately need to get my backpack ( on a trolley ) moving so when I get WFP under my belt and gain the required experience those times should reduce considerably.
JohnL