If you should opt for company-owned vehicles, you'll find vans to be the most convenient and serve your needs the most efficiently. A couple of plastic or galvanized water pails, one 2 gallon and the other 5 gallons. These strip washers reportedly work very well on all but the dirtiest of windows. Another alternative is an extension pole and brush device. Most professionals claim this device is ideal for second story windows, but for best quality workmanship, they still prefer the basic brush and squeegee approach.
Deionized water is a kind of water from which all minerals and foreign elements have been removed.
Using this kind of water assures the window washer an easier and faster job with no worries about streaking or water drops. It's important that you do some homework on the various glass treatments in vogue these days. Many of these coatings or coverings require special treatment such as the use of soft towels instead of brushes that might scratch the surface of the window coating. A few drops of cleaning solution in your bucket of water. Remember, too many soap suds are detrimental to quality work.