I have aluminum combination storm windows. How long do they take to clean?
The aluminum combination storm window set (two glass and one screen) and the house windows (a single pane over a single pane) will take about 30 minutes to clean the first time. Subsequent cleanings will average about 20 minutes. It is best to remove the storm windows and clean them outside of the house. Sliding them up and down in place in order to clean them is not very effective. Removal of the storm windows and the screen works the best.