Fortunately, the process of cleaning windows is easy enough. Many commercial window-cleaning products are available, all of which promise to impart a “streak-free shine.” But we have found that a simple solution—one part white vinegar to two parts water—is perfect when mixed up in a spray bottle.
The best homemade window cleaning solution is to just mix two gallons of water and about a teaspoon of dishwashing liquid together in your bucket. Some people also opt to use vinegar and water to clean windows. In warm weather, you'll get a little more working time by using cool water.
Dawn as a substitute glass cleaner
One of the most effective ways to clean glass is dish soap – it's what professional window cleaners use when cleaning exterior windows.
Dish Soap and Water
Dish soap is perfect for cleaning windows with residue and buildup, and you only need a few drops of dish soap to get the job done. If you're cleaning inside windows, use a spray bottle and if you're washing exterior windows, use a bucket.
In a spray bottle, combine ¼ cup of white vinegar with ½ teaspoon of liquid dish soap. Dilute the solution with 2 cups of water, then shake the bottle vigorously to mix the components. If you don't have white vinegar on hand, you can substitute it with lemon juice.
Professional window cleaners use a solution made from dish soap and water to achieve a streak-free clean. The key is to use a small amount of soap and distilled water. Some professionals add ammonia to the water for increased cleaning power.
Spray a stronger mix of 1:1 water and vinegar (or Windex, or glass cleaner) at your window, so that the solution covers most of the glass. (I found Windex to work better, but if you have pets—or kids—who frequently lick outdoor windows, vinegar may be the best route for you.)
Mix up your window-cleaning solution: In a plastic spray bottle, mix together 2 cups of warm water with 1/4 cup white vinegar and 1/2 teaspoon of Dawn. Sweep away dirt: Using a broom, sweep away the cobwebs and debris from the windows and sills.
Hot water cleans windows faster
Removes dirt more easily – hot water is more successful in removing dirt. This is because hot temperatures make dirt particles vibrate faster, which makes it a lot easier to wipe them away.
Bottom Line
If you're a homeowner, clean your windows regularly, twice or thrice a year, and once every month for commercial properties like restaurants. However, take into account factors that may require you to clean exterior windows more often. You can do it yourself or call in a professional.
You can also make an all-natural window cleaning solution using a mixture of equal parts white vinegar and hot water. Adding a touch of liquid soap to the vinegar solution will help remove any streak-causing wax left on the window from commercial cleaners used in the past.
Window Washing Tips
If you want to take an environmentally friendly route (which we recommend), then a solution of warm water and vinegar will do the trick and get your windows clean. Some brands and types of windows are much easier to clean than others.
Paper towels are an easy go-to whenever you're cleaning glass. But, that right there is your problem. Paper towel is the number one culprit of leaving behind streaks and lint. Paper towels are typically treated for absorbency, which makes them ideal for spills, but awful for glass cleaning.
This has to do with the evaporation rate—if your cleaning solution evaporates before you have time to wipe it off, it will leave a mark. Alcohol- and ammonia-based cleaners evaporate more quickly than vinegar, but any window cleaner can leave streaks if it isn't removed fast enough.
A big problem is the evaporation rate. If you're cleaning your windows on a warm sunny day, the liquid part of the solution evaporates quickly and leaves behind a residue that appears as streaks. On the other hand, if you don't entirely remove the liquid you can also be left with a streaky window.
Mix one part distilled vinegar to 10 parts warm water in a spray bottle. Wipe down the window with a a soft, clean, lint-free microfiber cloth or paper towel to remove dust before you spray your solution, then spray the entire surface.
The blue solution in the reservoir is an alcohol-based glass cleaner probably diluted with some water. After multiple people have wiped bugs, mud, oil, and gasoline off their vehicle using the squeegee and dunked it back into the tub, that fluid is more filth than detergent.
Both a washing and a cleaning should leave you with streak-free glass, but a washing is a quick service that isn't as thorough. Window washing usually involves spraying on the solution and wiping it away with a squeegee to remove loose surface debris only. This isn't what's involved in window cleaning.
In most cases, it is most beneficial to wash your outside windows during the spring or fall months.
It's often best to clean windows when temperatures are between 64 degrees Fahrenheit and a temperature in the 70s. In other words, seek a day that's not overly hot. For many, this means either a day in the fall or spring or a very early morning on a cooler day in summer.
Once all the dirt is off the windows, it's time to dry them. Working from the top down to prevent drips, dry the glass with a squeegee or clean, dry, lint-free towel. Use a dry part of the same cloth to wipe away cleaner that's pooled around the edges where the glass meets the frame.