Hi all. Bit of advice needed. I have a couple of houses on my books that have massive high Windows on the gable end of the house. Now I mean the whole gable end is almost all glass ( no pictures sorry). What's the best way to attack these? I have been using 12ft pole with basic washer and squeegee, but to be honest I am not getting a great result from it. Especially on hot days. Just interested to see how you guys deal with these. Thanks in advance.