Surfaces that constantly are damp provide the ideal growing conditions for black mildew. The condensation that naturally occurs on windows runs down the pane and lands on the wooden window sill. This makes the wooden sill damp and increases the chance of black mildew growth. The mildew can stain the wood window sill, spread to other areas of your home and fill the air with an unpleasant musty odour. Once you find black mildew growing on the window sill, remove it as soon as possible with a few household items.
- Skill level:
- Moderately Easy
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Things you need
- Spray bottle
- White vinegar
- Oxygen bleach
- Long-handled spoon
Fill a spray bottle with white vinegar. Alternatively, mix 1-cup oxygen bleach with 1 gallon of water and pour in a clean spray bottle. Neither vinegar nor oxygen bleach will damage, discolour or harm surfaces.
Spray the mildewed window sill with the mixture and let sit for 10 minutes. Dampen a clean cloth in cool water and wipe the mildew with the cloth.
Fill a bucket with 1-gallon warm water. Add 1-cup borax to the water and mix thoroughly with a long-handled spoon. Saturate a clean cloth in the mixture and wring out the excess liquid. Scrub the windowsill clean with the damp cloth.
Examine the rubber seal along the window. Wipe any mildew or mould off the seal with the damp cloth.
Dampen a clean cloth with cool water and wipe the mixture residue off the windowsill before drying it with a towel.
Tips and warnings
- Regularly wipe condensation off the window pane and window sill to keep black mildew at bay.
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