As temperatures drop and heating systems return in homes across the UK, condensation can become a recurring issue. It forms when moisture in warm air condenses on cold surfaces, leaving windows steamed up and damp. This is especially common in winter when central heating runs during cooler morning and evening hours, and if left untreated it can lead to damp and mould growth.
Potato hack creates protective film
Lisa O’Hanlon, interior specialist at The Shutter Store, says potatoes contain starch, and when rubbed across a window, they create an invisible film that acts as a barrier against moisture build-up. She advises slicing a potato in half to expose the starchy centre and rubbing the cut side across the glass to form the protective layer.
“It’s an effective hack for people on a budget who want a short-term fix to excess condensation in the home,” O’Hanlon said. She recommends combining the trick with opening windows daily to encourage airflow and using dehumidifiers to remove excess moisture. “Throughout the winter months, these simple and affordable steps will help to keep your home dry and mould-free – reducing any costly maintenance.”
After covering the window with the potato juice, the excess should be buffed away with a cloth to prevent streaks or dust attraction. The method is not a permanent solution, as the starch can wear off or be washed away.
Seven tips to reduce condensation
Knowes Housing Association in Clydebank, Scotland, notes that while condensation itself is not a problem, untreated it can cause damp patches where mould can grow, which may be harmful to health and damage the fabric of a home. The association lists seven actions to address condensation:
- Use pan lids when cooking and leave the extractor fan on for 10-15 minutes afterwards to clear humid air.
- Close kitchen and bathroom doors when cooking, boiling the kettle, or bathing or showering to prevent moisture spreading to colder rooms.
- Dry clothes outdoors whenever possible; if not, keep them in a bathroom with the door closed and windows open until fully dry.
- Turn on the extractor fan when showering or cooking to remove steam and moisture.
- Ensure the washing machine and tumble dryer are vented correctly.
- Reduce clutter and move furniture at least 50mm away from walls to improve air circulation.
- Buy a dehumidifier to help reduce humidity levels in the air.
