Double glazed unit failure is usually due to the degradation of the seal between the putty and the glass, which is why regular external painting is so important.
Double Glazed units on astrigalled windows which have the low profile units are guaranteed for 7 years.
Single pane windows (1/1) which have the wider 11mm sightline come with a 10 year guarantee.
These guarantees are subject to external paintwork being maintained on a 3 year external paint cycle.
Full guarantee details are online in the customer services section of our website.
Please fill out your details in the form below to report a failure and we will deal with this shortly.