How To Clean Mold From Windows

Because of how dangerous a build up of mold can be to anyone who inhabits that space, finding out how to clean mold from windows and indeed everything is really important.

How To Clean Mold From Windows
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However, in this article, we’ll be restricting ourselves to windows: how to remove mold from them and how to prevent a reappearance. Now, let’s get to it.

Removing Mold From Windows


Vacuuming will work if you are trying to remove mold from your window sills and the mold is dry.

Your vacuum cleaner should have a crevice tool and that is what you want to use in getting out the mold.

However, before you go ahead with your cleaning, you have to take precautions.

Make sure you are wearing a pair of gloves, some clothes you do not care much about, a face mask and a pair of goggles if you can manage that.

The idea is to protect your person from a mold onslaught. Mold spores will definitely be flying around as you try to get the mold off and you do not want those things on you.

You also want to make sure that the room is well ventilated and the window is open so that the mold spores you set loose will have a means of escape.

Now that you have got yourself protected, you can go ahead and vacuum around your windows.

And because we are dealing with mold here, consider using a vacuum cleaner that has HEPA filtration to take care of the mold spores.

When you are done with that, immediately empty out the dust canister or bag into an airtight container and dispose it off. 

You certainly do not want to leave mold lying around as you could be creating a worse problem than you are trying to solve.


On the other hand, if the mold is already wet, don’t bother vacuuming it out because that will make a mess of things. This time around you’ll have to get your hands dirty. They should still be gloved, of course

Get you a bucket of water with laundry soap and a soft bristled scrubbing brush. You’ll be using these to scrub off the mold from the window sills and the windows themselves.

One thing to avoid is using the brush continuously without dunking in water.

Dunking the brush in water allows the mold that has been collected be dislodged so that it can go back to removing more mold.

Now, because you are not using a vacuum cleaner that automatically collects the rubbish, you’ll need to place a rag on the floor, directly beneath the window.

This way, whatever doesn’t get caught by the brush will get caught by the rag, making it easy for you to clean up.

And of course, your window has to be open through it all.

Dyson Vacuum Rev
Image by PixelAnarchy from Pixabay


When you are done with vacuuming or brushing off, the next thing to do is to disinfect the area.

This is because mold is toxic and so just removing the mold without disinfecting the spot where it has grown will not eliminate its effect.

That said, your best bet in this situation will be bleach. So, mix a little bleach in some water and get you a rag (preferably microfiber or cotton seeing as you’ll be dealing with glass) and get to scrubbing.

Pay attention to the crevices on the sills and consider cleaning all the windows to cover all the bases.

Leave To Dry

Allowing your windows and window sills to dry is really important because a damp place is a breeding ground for mold.

So, if you close your windows without allowing them dry properly, you’ll be at this same point in a short time from now.

Now, if your windows aren’t in areas where they can get some sun, you might have to strategically position window fans. Whatever you decide to do, though, make sure that your window sills dry out in about 24 hours.

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Preventing A Reappearance

The key to preventing a mold reappearance is to reduce condensation as much as possible. So, make sure that your rooms are always well ventilated.

If it just rained, consider wiping down your windows and the window sills and open said windows to allow them dry.

You could also add cleaning your windows and window sills to your regular cleaning routine. This way, you’ll be able to quickly spot any attempt at a mold growth.

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