Overview
- Consumer coverage highlights small hanging dehumidifier bags for about £1 and window insulation film costing roughly £2.99–£3.50 to reduce window moisture.
- Window expert Nancy Whittington-Coates says condensation spikes in colder months when warm, humid indoor air hits cold surfaces, with bedrooms a frequent trouble spot.
- Her guidance stresses keeping heat in while letting air out by using thermal curtains at night, opening trickle vents or briefly cracking windows by day, and running extractor fans for 15–30 minutes after cooking or showers.
- A TikTok user reported a low-cost insulation kit stopped condensation on her windows, while noting that poor ventilation could shift moisture elsewhere and that careful installation improves results.
- Experts caution that drying clothes on radiators releases large amounts of moisture, and that incorrect insulation or tightly sealed rooms can worsen damp and mould.