It is a commonly held belief that windows should not be cleaned when it rains because ‘the rain will just make them dirty again. Is this really a fact?
The simple answer is 'no'. Although in some parts of Europe and the UK many people believe having their windows washed when it rains is a waste of time, in the USA, it is normal practice for window cleaners to carry on in all weather except storms and high winds.
Windows need cleaning because they get dirty not because they get wet. When chimneys were belching smoke it probably was true that by the time the rain drops reached the ground they were full of dirt and smoke particles. With the Clean Air Act that situation has changed. Nowadays the three major causes of dirty windows are dust, pollen and droppings. If these are present on the window glass when it rains, the residue in the rain attaches itself to the dirt and can often make the windows look worse. When the windows is clean the rain will simply runs off and the glass continues to remain clean.
When the fine weather comes you can see all sorts of so called 'window cleaners' 'popping out of the woodwork'. These are the amateurs and cowboys. Beware of them, they often do a poor job and take risks. They are part of the reason why the myth about cleaning windows in the rain has sprung up because these fair weather cleaners just don’t want to get wet.
So rain should not stop you having your windows cleaned. You can have them washed with pure water in all but the most torrential rain with excellent results.
Avoiding having your windows washed in wet weather, which is especially during the winter months really does you no good. Dirty windows look bad and stop the limited amount of sunlight getting into your home. No wonder people often feel depressed in the winter having look out of their grubby windows.