To effectively remove mold from plastic window frames, including uPVC, you should begin with gentle solutions and avoid harsh chemicals to prevent damage or discoloration.
Step-by-Step Mold Removal Process
Start with the mildest solution and progress if the mold persists. Always test any cleaning solution on an inconspicuous area first.
1. Hot Water and Soap Solution (Primary Method)
This is the recommended first approach for cleaning mold and black mold from uPVC window frames.
- Preparation: Fill a bucket with hot water and add a mild dish soap or all-purpose cleaner. Mix until suds form.
- Application: Dip a soft cloth into the soapy water, ensuring it's damp but not dripping.
- Cleaning: Gently wipe down the moldy areas on the plastic window frames. For stubborn spots, you might need to apply a little more pressure or let the solution sit for a minute or two before wiping.
- Rinsing: Once the mold is removed, wipe the frames down with a clean, damp cloth to remove any soap residue.
- Drying: Finish by drying the frames thoroughly with a clean, dry cloth to prevent new mold growth.
2. Vinegar (Alternative Method)
If the hot water and soap solution doesn't completely remove the mold, vinegar can be an effective next step.
- Preparation: Fill a spray bottle with white vinegar. You can use it undiluted or dilute it slightly with water (e.g., 1 part vinegar to 1 part water) for less severe mold.
- Application: Spray the vinegar solution directly onto the moldy areas of the plastic frames.
- Soaking: Let the vinegar sit on the mold for at least 15-30 minutes to allow it to penetrate and break down the mold.
- Cleaning: Use a soft cloth or a soft-bristled brush to scrub away the mold.
- Rinsing: Rinse the frames thoroughly with a clean, damp cloth.
- Drying: Dry the frames completely to prevent moisture buildup.
Important Don'ts When Cleaning uPVC Window Frames
It's crucial to understand what not to use on uPVC to preserve its integrity and appearance.
| Cleaning Agent | Reason to Avoid | Consequence |
|---|---|---|
| Bleach | Highly corrosive and can react negatively with uPVC. | Can turn white uPVC permanently brown. |
| White Spirits | Strong solvent that can damage or discolor the plastic. | Can turn white uPVC permanently brown. |
Do NOT ever be tempted to use bleach or white spirits on uPVC, as they can cause irreparable damage and turn white uPVC brown.
Preventing Future Mold Growth
After cleaning, consider these tips to minimize mold recurrence:
- Ventilation: Ensure good airflow in rooms, especially bathrooms and kitchens, by opening windows or using extractor fans.
- Moisture Control: Wipe down condensation from windows daily, especially during colder months.
- Regular Cleaning: Include window frames in your regular cleaning routine using the hot water and soap solution to prevent mold from taking hold.
