10 Window Cleaning Tips for Apartment Dwellers

Don't Wash Windows on Sunny Days
Cleaning the windows on a sunny day is counterproductive -- the heat of the sunlight contributes to streaking. © Dave and Les Jacobs/Blend Images/Corbis

While you might think you need a bright, sunny day to see the most streaks and grime that have built up on your windows, when you clean glass in the sunshine you're actually creating more streaks -- and that's the opposite of your desired end result. What's going on is this: If you apply cleaning solution to glass that feels warm when you touch it, those hot windowpanes will cause the liquid to dry too quickly, and that will leave streaks behind.

Instead, pick a more gloomy day to tackle this task -- overcast days are good choices, as are days that are about 70 degrees Fahrenheit (about 21 degrees Celsius) [source: SanSone].