We get many calls from customers about condensation forming on newly installed windows, and here's the surprising answer: it's usually a great sign. It means your new double glazing is doing its job perfectly. Let us explain.
Condensation on the outside of new windows shows the glazing is preventing heat loss so effectively that the outer pane stays cold, so moisture in the morning air condenses on it, just as it does on a car windscreen. Your old windows probably never did this because they were leaking warmth straight through the glass, keeping the outer surface warm. Exterior condensation clears as the day warms, and needs no action at all.
Condensation on the inside is different, a sign of humidity in the room rather than a window fault. Kitchens, bathrooms and drying laundry all add moisture to the air. The fixes are practical: use trickle vents, ventilate briefly each day, and keep air moving.
Condensation between the panes is the one that matters: it means the sealed unit has failed and needs attention. If you see misting inside the unit itself, get in touch.
Unsure which type you're looking at? Send us a photo, we'll tell you straight away, no charge.