Windows are a prime location for mold to grow because they tend to develop condensation in cold weather. Moist environments are highly desirable to mold, making your windows one of the most common places for mold to appear. If you've noticed mold taking up residence on and around your windows, it's time to do some heavy duty cleaning. Time is of the essence, too, because, left alone, the mold will most likely continue to spread until you have a problem so large it requires professional remediation.
Gather Your Supplies
Keep yourself safe by collecting a pair of rubber gloves, a face mask and a pair of goggles. These are essential because when you remove mold, some spores become airborne, and you don't want to inhale them because they can make you sick. You'll also need a spray bottle of water, a bucket of warm, soapy water, a heavy duty scrub brush and a spray bottle of white vinegar.
Open the Windows
Provide ventilation as you deal with your mold problem by opening the window while you're working. If it's chilly outside, do this one-at-a-time, but if it's a warm day, throw open all your windows while you work. In addition to ventilation, the fresh air will help eliminate the musty odor of mold and freshen the air inside your home.
Get the Mold Wet
Spray the entire moldy surface with water from the spray bottle. The water will help trap the mold spores so fewer are released into the air while you're scrubbing.
Do Some Scrubbing
Dip your scrub brush into the bucket of soapy water and use some elbow grease to really attack the mold. Scrub as hard as necessary to remove any trace of the mold. You can use the brush directly on the window, as well, though you'll need to use less pressure. You might need to scrub the mold two or three times to completely eradicate any trace of its existence.
Sanitize the Windows
Spray a light mist of white vinegar on the window surfaces where the mold was. This will help deal with the musty smell of the mold, but it will also help sanitize the entire area, decreasing the risk that new mold will grow.
Let the Windows Dry
Encouraging the window areas to dry completely is a good step to help prevent mold from growing right back. If the windows are open, this is perfect because the breeze will help dry the area. If you can't have the windows open, aim a box fan at the area or use a hair dryer to completely dry each window area.
Prevent Future Mold Growth
Keep your windows and the areas around your windows clean and dry. If condensation tends to appear, take the time to dry the areas with a clean towel. This takes a few minutes, but it will save you time in the long run so you aren't scrubbing more mold away. Regularly wipe your window areas with a damp rag to help remove the spores that encourage mold to grow. Click here to read more about getting rid of mold and how to tell if you need professional help.