The one rule to follow to prevent condensation build up - even on double glazing
![The one rule to follow to prevent condensation build up - even on double glazing](https://i2-prod.mirror.co.uk/incoming/article31671944.ece/ALTERNATES/s615/0_Water-pooling-from-window-condensation.jpg)
A double glazing expert has revealed the one simple trick all homeowners should follow in order to prevent unwanted condensation forming and reduce the risk of health issues