Having mould form on your windows is not only unpleasant to look at but can also pose health risks. Mould thrives in damp environments and can damage window frames and cause respiratory issues over time. If you notice patches of black, grey or green mould appearing on your windows, it’s important to tackle it as soon as possible.
Here are some effective tips for removing mould from windows and keeping it from returning.
What Causes Mould Growth on Windows?
Before treating the mould, it’s important to identify what is causing it to form in the first place. Mould needs three things to grow – moisture, nutrients and the right temperature. Take a look at where in your home the mould is appearing and think about possible sources of excess moisture, such as:
- High humidity levels – Mould grows in damp, humid environments above 70% relative humidity.
- Leaking pipes or roof – Look for signs of water damage that could allow moisture to accumulate.
- Condensation – Windows often get condensation during temperature changes that mould can feed off. Make sure there is adequate ventilation.
Addressing the root cause will help prevent new mould from recurring after cleaning. You may need dehumidifiers, fans, repairs or improved ventilation.
Safely Remove Surface Mould
Once the source of moisture is addressed, it’s time to remove existing mould. For light surface mould on windows, you can usually wipe or scrub it away. Always take the following safety precautions:
- Wear gloves, masks and eye protection to avoid contact with mould bacteria.
- Use a hard brush or clean cloth with a diluted bleach solution of 1 cup bleach to 1-gallon water or enzyme cleaner.
- Work in a well-ventilated area and thoroughly dry the cleaned surfaces afterwards.
- Dispose of affected materials like cloths or sponges properly to prevent spore spread.
For heavier infections, you may need commercial mould removal products or the replacement of affected materials like rotted wood frames. Never try to remove mould by burning or sanding; this can increase your risk of inhaling mould bacteria.
How To Prevent Future Mould Growth on Windows
Once your surfaces are clear, take measures to inhibit new mould:
- Run dehumidifiers or fans to keep indoor humidity below 50% if possible.
- Ensure adequate airflow around windows with openable windows or vents.
- Repair any leaks, cracks or sources of recurring moisture promptly.
- Clean windows regularly, ideally every few months, to remove grime and residue mould prefers.
- Consider using a bleach solution to sanitize cleaned windows periodically.
- Inspect windows regularly for signs of moisture or mould returning.
Consistent preventative care, such as ventilation, humidity control, and cleaning, can discourage mould from continuously growing on your windows. While a professional window cleaner may perform deep cleans annually, simple home maintenance keeps conditions unfavourable for mould.
Seal And Paint If Needed
For windows with damaged frames, wood rot or caulking that allows moisture to enter, you may need to do some sealing and repainting to address the issue. Follow these steps:
- Sand any flaking or peeling paint thoroughly before resealing or painting.
- Replace any cracked, missing or degraded caulking with a mould-resistant variety.
- Apply a primer and two coats of exterior-rated paint designed for mildew resistance.
- Ensure all seams are fully sealed against water penetration.
Refinishing windows protects the underlying wood and re-establishes a moisture barrier. If needed, consider using a pressure washing or window cleaning business like Sparkle Window Cleaning in Toronto for prep work. With any necessary repairs, your windows should be protected against future mould blooms.
When To Call The Professional Window Cleaners
Getting help from licensed professionals with proper equipment and credentials for severe mould infestations is advisable. Signs you may need window cleaning or mould remediation services include:
- Extensive blackening or discolouration of many windows.
- Visible mould growth inside window cavities or frames.
- Repeated mould recurrence despite thorough self-cleaning.
- Health issues that may be mould-related in your home.
- Need for assessment of mould levels or air sampling.
Professional mould removal involves containment, high-powered vacuums or antifungal treatments beyond DIY capability. They can also accurately diagnose challenges like unseen structural damage beneath surfaces. For complicated or large mould problems, defecting to the experts yields the best results.
With regular maintenance and quick response to mould when spotted, you can usually defeat it through non-toxic home remedies. However, if signs indicate a serious infestation, seeking help from window cleaning services i s the best option.
Your Go-to Window Cleaners In Toronto!
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