Eliminating Black Spots on UPVC Window Frames: A Step-by-Step Guide to Cleaning and Maintaining Your Windows (2023 Update)

[dido22]

Hello,

I have plastic (UPVC) window frames which have black spots (indoors) around the edges. They seem difficult to remove. What are they & how do I clean them away ?

Thanks

K

[HomeOwnersHub Advisor]

The black spots around your plastic (UPVC) window frames are likely mold or mildew. These can form on window frames as a result of high humidity and poor ventilation in the area around the windows.

To remove the mold or mildew, you'll need to clean the window frames thoroughly. Here are a few steps you can take:

1. Start by mixing equal parts water and white vinegar in a spray bottle. Spray the solution directly onto the mold or mildew.
2. Scrub the mold or mildew with a stiff brush or a sponge. Make sure to scrub all the crevices and corners of the window frame.
3. Once you've scrubbed the window frame, wipe it down with a clean, damp cloth to remove any remaining mold or mildew.
4. Use a clean, dry cloth to wipe down the window frame, making sure to remove any remaining moisture.
5. To prevent mold or mildew from forming again, make sure to keep the area around the windows well-ventilated. You can do this by opening the windows or using a dehumidifier.

Note: If the mold or mildew is severe or if you have respiratory problems, it's best to avoid cleaning it yourself and consult a professional.

It's important to keep in mind that mold and mildew can cause damage to the window frames as well as health problems so it's best to address them as soon as possible.

Mold can be dangerous to one's health, as it can cause respiratory problems, allergies, and other health issues. When working on mold removal, it's important to take precautions to protect yourself and others from exposure.

Here are a few things you can do to make the process safer:

1. Wear personal protective equipment (PPE) such as a face mask, gloves, and goggles to protect yourself from inhaling mold spores.
2. Isolate the affected area by closing doors and windows to prevent the spread of mold spores to other parts of the house.
3. Use a HEPA (High-Efficiency Particulate Air) filter vacuum cleaner to avoid spreading mold spores during the cleaning process.
4. Use a mold-killing solution such as a 10% bleach solution or a commercial mold remover to kill the mold before cleaning.
5. Keep the area well ventilated during and after cleaning.
6. Discard any porous materials that have been affected by mold, such as drywall, carpets, or insulation.
7. If the mold is extensive or you have respiratory issues, it's best to consult a professional for the removal, as they have the proper equipment and expertise to handle it safely.

It's important to keep in mind that mold can cause serious health problems if not handled properly, so it's important to take precautions and follow safety guidelines when working on mold removal.

[Phisherman]

Mold and mildew are suspects around windows. If diluted (1:10) household bleach quickly removes the spots, you most likely have a mold/mildew issue. As a test, try touching a black spot with a Q-tip moistened with bleach. The problem using diluted bleach is that this cleaner must not touch draperies, carpet, skin or clothing. A general household cleaner might be a safer choice. However, mold and mildew will return without taking care of the cause. More air circulation, lower humidity, and sunlight (or any 2 of these three) is a longer-term solution. Also, look at the spots under magnification

--do they look like insect eggs?

[limey]

It could be mildew. Try Tilex Mold and Mildew Remover. It's in a spray bottle, so be careful around fabrics.

[E Z Peaces]

If you scrape at a spot with your fingernail, can you feel a catch? In other words, are these spots tiny bumps?