The following works are eligible for the premium for the windows and doors category:
- installation of new high-efficiency glazing, such as high-efficiency glass, clear plastic sheets (polycarbonate) or skylights
- demolition and installation of windows and exterior doors with high-efficiency glazing installation of full exterior doors
demolition and installation of parapets or railings in the case of low windows
installation of a openings in the roof, such as the roof windows and skylights with a U-value of no more than 1.0 W/m²K and the lightwell.