Yes. Replacement windows and doors in England generally need to comply with relevant Building Regulations requirements. Using a FENSA-approved installer can provide certification demonstrating that the installation complies with applicable regulations.

Yes. Energy-efficient glazing can help reduce heat loss through windows, reduce draughts and improve the comfort of a home. The Energy Saving Trust recommends considering factors such as energy ratings, glazing and frame materials when selecting replacement windows.

Consider the window's energy performance, glazing, frame material, ventilation and suitability for your property. UK Building Regulations also set requirements affecting areas such as thermal performance and ventilation when windows are installed or replaced.