Window cleaning is an important step in preserving the glass, lengthening the lifespan of your windows, and preventing damage. Dirt, water, and environmental materials build-up on the glass and absorb into the windows' pores, leading to permanent stains and damage. Accumulation of these naturally occurring items can also etch into the glass and cause corrosion, scratches, chips, and cracks. In extreme cases, materials can collect within the slide brackets of the window assembly; affecting the functionality of the window itself, while continuing to cause damage. Along with having streak-free, spectacular looking windows, regularly cleaning them protects you against any type of possible symptom for failure.