Anwedd a llwydni

Mae anwedd yn digwydd pan fydd aer llaith a chynnes yn cwrdd ag arwyneb oer.

There is always some moisture in the air, even if it cannot be seen. When air cools it cannot hold all the moisture and tiny drops of water appear. If moist air cannot escape through an open window or air vent, it will move around your home until it finds a cold spot where it will become condensation. This may lead to mould growth.

Please see our leaflet Condensation & Mould for further information.