Find out about replacing your windows

Use this guide to find information on replacing windows.

Improving windows without need for planning approval

The refurbishment and draught-proofing of existing windows can improve their thermal performance. Similarly, the installation of internal secondary glazing can also significantly improve thermal performance and sound insulation. These works do not require planning permission.

Internal secondary glazing is generally supported on listed buildings but may require listed building consent depending on its impact on the special interest of the building.