Condensation appears when water molecules in the air meet cooler surfaces, such as glass, tiles or metals. A common misconception is that when condensation forms, there must be a problem.
In reality, condensation appearing on the outside of your windowpane means it is performing as it should and there is nothing to worry about. When that happens, the cold air is being kept outside. Only if these droplets appear between the panes of a double- or triple-glazed unit should you be concerned.
For more information on condensation, please visit our Helpful Guides section for more.
FENSA offer advice too.