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Is it normal to see condensation on a triple glazed window?

John Conlin / 24 April 2018

A reader is unsure whether the condensation appearing on new triple glazed windows is normal.

Condensation on window
Is it normal to see condensation on a triple glazed window?


Some of our new triple glazing is often clouded with condensation in the morning. The suppliers say there is nothing wrong. How can that be right?


Check whether the condensation is on the outside. If so, it is because the new glazing is being super-efficient. Overnight the outer glass will have cooled down because no warmth from inside reaches it. As morning comes, the glass will remain cool while the air outside will warm up, causing condensation.

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The opinions expressed are those of the author and are not held by Saga unless specifically stated. The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. You should not rely on this information to make (or refrain from making) any decisions. Always obtain independent, professional advice for your own particular situation.