In addition to keeping the windows sparkling, an overriding reason for cleaning windows is to prevent damage that is caused by dirt accumulation. That is why window cleaning is necessary throughout the year and even more so during winter.
The kinds of dirt that windows collect vary during the different seasons but windows take a real beating during winter. The howling winds that are common during this season carry with them all manner of debris and some of the debris is inevitably deposited on the windows. While any kind of dirt on windows is dangerous, what makes winter dirt especially lethal is the fact that some of the deposits on windows contain the salts that property owners use to melt ice. Any salt deposit on windows is a disaster waiting to happen and urgent measures have to be made to remove them. Unlike other kinds of dirt, salt etches itself onto the glass surface and creates unsightly spots. Removing such spots and stains presents a real challenge and in many situations it is easy to break glass when trying to clean it.