Why should I use deionized water?
Common tap water is typically used during window cleaning, pressure washing and surface rinsing processes. Unfortunately, tap water contains a multitude of different minerals and salts such as calcium, magnesium and silica. When tap water evaporates, these particles are left behind in the form of a visible residue that sits on most surfaces. This residue is unsightly and may interfere in the chemical bonding process of the finish coat. Deionized (DI) water is water that has had its minerals and salts removed through a filtration process. Because the majority of water impurities are dissolved salts, deionization produces high purity water that’s generally similar to distilled water, and does so quickly and without scale buildup. Without minerals and salt in the cleaning water, the final DI rinse dries on the glass absolutely spot-free. Deionized water costs only a few pennies extra for each gallon of water used. Using DI water prevents film forming residue on the surface and strengthens
