Should Insulated Windows Be Pressure Washed?

Where to Pressure Wash

• Pressure washing is appropriate for cleaning hard, solid surfaces. You typically can pressure wash wood surfaces, such as fences, decks, siding, concrete and fiberglass without worrying about damaging the surface. Pressure washing windows could crack or even shatter the glass. Even tempered glass windows, which might withstand the aggressive force of a pressure washer, are susceptible to damage -- pressure washing could break the insulated seals around the windows.

Simple Window Cleaning

• For basic exterior window cleaning, you don't need a lot of expensive equipment or special cleaning solvents. Mild dishwashing detergent works well to clean basic dirt and grime buildup, but ammonia can be used instead to strip away greasy buildup. Window scrubbers are helpful for cleaning larger windows because they can quickly cover large areas, but a basic natural sponge is adequate for most windows. Once the windows are clean, the soapy water can be wiped off with a squeegee.

Stubborn Spots and Stains

• A scrubber or sponge might not be strong enough to get rid of stubborn stains, such as paint, dead insects, adhesive and tree sap. While a pressure washer would make short work of all of these stains, a razor blade works just as well without the danger of destroying the windows. Adhesive and oil-based paints can be loosened using rubbing alcohol, acetone or mineral spirits before being scraped with a razor blade. Sap and insects can be scrubbed away with a nylon scrubbing pad without fear of scratching the glass.

High Windows

• Windows that are very high up can be reached with ladders. However, if you are uncomfortable being on a ladder, you can purchase window-washing kits from your local hardware or home improvement store. These kits are typically meant to be attached to a garden hose so you can wash windows high up on your house with ease. If neither of these options works for you, you need to hire professionals to wash your windows for you.