Mold and mildew are everywhere….including and unfortunately, on many windows and window sills! 

You may be gazing out your favorite window, and your view of the outside world looks clean and fresh. Then you gaze down and notice the most annoying culprit of clean hanging out on your window sill! Or your view may be impeded because mold and mildew are clinging to your glass like a static cling decal you would see at your local beauty salon!  

Residential and commercial property owners find mold and mildew repulsive and gross, especially if it’s sitting like a frog on your favorite window! 

What is one to do? What is the best way to remove mold and mildew from your window panes or window sills? Here at Window Ninjas, we will answer that question and other pressing questions you may have about window and window sill cleaning! Are you ready? Because we are!  

Let’s get to work!


What Is Mold and Mildew, and How Did It Find Its Way Onto My Window and Window Sill?

As you peer out your windows, admiring the world beyond, you might be disheartened to discover unwelcome guests lurking on your window sills. Fear not, for we shall unveil the mysteries of mold and mildew, two distinct entities that have often been mistaken as the same.

Hailing from the fungi kingdom, mold, and mildew relish damp, humid environments. Yet, their unique appearances, growth patterns, and impacts on our surroundings set them apart.

Mildew, a surface fungus, manifests as a delicate, powdery film, typically in shades of white or gray. It favors organic materials such as plants, paper, leather, and textiles. While less harmful than its counterpart, mildew can mar surfaces and release unpleasant odors.

In contrast, mold is a formidable foe with significant health implications. It dons various hues, including green, black, blue, or even fuzzy white patches. Mold delves deeper into surfaces, establishing colonies that propagate through airborne spores. Its preferred habitats include wood, wallpaper, insulation, and drywall. Beware, for exposure to mold may trigger allergic reactions, respiratory issues, and other health concerns, particularly for those with weakened immune systems or existing allergies.

In essence, despite their similarities, mold, and mildew are not identical. Recognizing their distinct appearances, growth habits, and potential consequences empowers us to tackle these unwelcome intruders effectively, restoring our windows and window sills to their former glory.


How Did Mold and Mildew Find Its Way Onto Your Window Sill?

Ah, the age-old question – can windows collect mold and mildew? It might seem puzzling at first, but fear not! We shall unravel this conundrum and shed light on why even windows are not immune to these pesky intruders.

Surprisingly, windows are made of porous materials. This astonishing fact often leaves people as amazed as if they had just found out their skin was made of titanium or their hair was made of cotton candy!

Suppose you happen upon mold or mildew on your windows. In that case, it’s likely due to a lack of cleaning or inadequate ventilation. For instance, if your windows face the north side of your home or business, they may not receive enough sunlight or fresh air, creating prime conditions for fungal growth.

But what to do when confronted with this unsightly sight? How can we restore our clear view of the world beyond, unencumbered by mold and mildew? Which chemicals are best suited for tackling this menace, and will they harm us more than the fungi themselves?

Stay tuned, for Window Ninjas shall impart all the answers and wisdom needed to vanquish mold and mildew from your windows and window sills safely and effectively. With perseverance and skill, we can reclaim our crystal-clear vistas, free from any hint of the culprit of clean, known as mold and mildew!


How Can I Get Rid Of Mold and Mildew From MY Windows and Window Sills?

If you’ve noticed an unwelcome green guest on your window and window sill, fear not! Mold and mildew thrive in warm, moist environments, making your windows a prime spot for growth. But don’t despair – there are ways to banish these uninvited visitors from your windowsill once and for all.

For the DIY enthusiast, you can grab a soapy sponge and get scrubbing! Consider incorporating sodium hypochlorite into your cleaning solution, as this powerful compound is particularly effective at eliminating mold and mildew. Alternatively, if you’re not one for DIY projects, consider calling a professional window cleaning expert like Window Ninjas. Our team knows how to handle even the most stubborn mold and mildew growth, leaving your windows crystal clear and free of any organic matter.

Suppose you’re interested in taking things a step further. In that case, pressure washing services are an excellent option for keeping your windows, window sills, and home’s exterior in tip-top shape. By maintaining a regular cleaning schedule, you’ll keep mold and mildew at bay and uphold the aesthetic appeal of your home.

But what if you’ve already had a pressure washing service, and the mold and mildew are making a comeback? Don’t fret – enlist the help of a professional team like Window Ninjas to schedule a top-notch window cleaning service.

In conclusion, whether you opt for a DIY approach or prefer to leave things to the pros, don’t let mold and mildew ruin your view of the world beyond. With the proper cleaning techniques and routine maintenance, you can enjoy crystal-clear windows that showcase the beauty of the great outdoors.


If I Choose To Go The DIY Route – Will I Need Protective Gear?

Are you a DIY enthusiast who loves tackling exterior chores on your own? You may be someone who enjoys rolling up your sleeves, getting your hands dirty, and restoring the shine to various surfaces at your home or business. If this sounds like you, you might be wondering about the necessary precautions when it comes to cleaning mold and mildew from your windows and window sills.

When using harsh household chemicals like bleach or ammonia, protective gear is essential. We recommend donning rubber gloves, large goggles that cover half of your face, and even considering a rubber cape, big rubber boots, and protective headgear. While you may not resemble a fashion icon, safety is paramount!

With your protective gear in place and your bucket of potent chemicals at the ready, it’s time to wage war against the dirt, grime, mold, and mildew plaguing your windows and window sills. Be prepared to work up a sweat and embrace the unique aroma of your cleaning concoction.

But before you dive in, consider this: would enlisting the help of a professional make your life easier and yield better results? Professional window cleaners possess the expertise needed to remove mold and mildew effectively, leaving your windows gleaming. While you may be skilled in DIY, the pros have the experience to tackle even the toughest challenges.

Ultimately, the choice is yours. Whether you decide to tackle this task on your own or hire a professional, remember that maintaining a clean and mold-free environment is vital for the health and beauty of your property.


Here Is Your List Of Chemicals If You Go The DIY Route

  • Bleach or Ammonia
  • Water and White Vinegar
  • Protective Gear – Rubber is your friend
  • Scrub brushes and towels or sponges
  • Elbow Grease

Instead of rushing to your local hardware store to gather an array of chemicals and tools needed to clean the mold and mildew accumulating on your windows and window sills, consider the costs and potential impact on your hands and nose from using harsh chemicals.

A more convenient option might be to enlist the help of a professional window cleaning company. They can expertly address your window cleaning needs and eliminate mold and mildew on your windows and window sills. However, if you’re the type who enjoys tackling challenges independently and takes pride in accomplishing tasks on your own, then kudos to you! Just make sure to weigh the pros and cons before diving into this undertaking.



Discovering mold and mildew on your windows and window sills can be pretty disconcerting. You might wonder how it got there and whether you should tackle the task independently or seek professional help.

This is where our experts at Window Ninjas come to the rescue! Our skilled team specializes in removing all types of dirt, grime, mold, and mildew from windows and window sills. Catering to both residential and commercial properties, we pride ourselves on delivering top-notch exterior cleaning services.

Before you rush to purchase an arsenal of chemicals and spend your weekend tirelessly scrubbing away at your window panes, why consider contacting our Window Ninjas experts? Not only will we save you time and effort, but we’ll also provide the information you need to make the best decision for your property.

Call us, and let us help you restore the sparkle to your windows while banishing mold and mildew once and for all! We are ready to take your call when you dial us up at 833-NINJAS-1 or online at