White Vinegar, Not Bleach, Is the Key to Removing Window Mould
White Vinegar, Not Bleach, Is the Key to Removing Window Mould

Mould around windows is a common problem in British homes, especially during the damp winter months. While many people reach for bleach to clean it, experts warn that bleach can actually cause mould to spread to previously unaffected areas.

Jade Oliver, a showroom stylist at Express Bi-Folding Doors, advises using white vinegar instead. 'Bleach doesn’t work and won’t make mould go away, however, white vinegar left for around an hour with a cloth soaked in warm, soapy water will clear it,' she said.

White vinegar, typically with five percent acidity, should be used undiluted. Pour enough into a spray bottle to cover the mouldy area, spray directly, and let it sit for at least an hour without scrubbing or rinsing. Then scrub with a brush or scouring pad and rinse with warm water. A final spritz of vinegar helps kill any remaining spores.

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However, avoid using vinegar on aluminium, cast iron, waxed wood, or natural stone, as it can damage the finish. Wear non-porous gloves, goggles, and a mask for safety. The vinegar smell will dissipate within a few hours.

For dirty windows, use a duster to loosen dust first, then gently vacuum with a bristle attachment to avoid scratching. For tough corners and rims, a feather duster can help manipulate grime.

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