Window cleaning services have come a long way since their inception in the early 18th century. Back then, window washing services were done by ragged children who climbed up on ladders and scrubbed away at the glass panes for little to no pay. Today, window cleaning services are a professional industry with advanced equipment and specialized techniques. While the earliest window washing services were limited to commercial buildings, nowadays they are available for residential properties of every size. Thanks to advancements in technology, window cleaning services now offer more than just basic glass cleaning. Today, customers can choose from a range of window washing services that include everything from skylight cleaning to removing hard water stains from window glass. Historically, window cleaning services may have been seen as unimportant labor, but today they are an essential part of any building maintenance.