How to Clean Low E Glass Windows How to Clean Low E Glass Windows

What You'll Need
Distilled water
Dishwashing detergent

Low E glass has a special film that’s reflective and cuts down on energy loss. However, it needs to be cleaned in special ways.

Step 1 - Dust

Where there’s just dust on the window, as there will be during summer months, the outside of low E glass windows can quickly be cleaned by turning the hose on them and allowing them to dry normally. However, this will only work in areas with soft water. If you have hard water you shouldn’t spray the windows.

Step 2 - Hand Cleaning

In soft waters areas, to clean by hand, mix together water and a little dishwashing liquid. In hard water areas, use distilled water. Rub on with a soft cloth and then gently rinse. Finish by cleaning with a soft cloth. You should never use ammonia-based products, such as most commercial glass cleaners, on low E windows.

You need to take particular care when drying the windows, as it can be very easy to leave ugly smears on the glass. Use a lint-free cloth for drying and stop before you’ve removed all the water, so that the remainder can evaporate naturally. The coating will reactivate with exposure to sunlight.

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