Black out roof windows are a good solution for Layer houses wider then 24 meters.
Black out roof windows are a good solution in the following cases:
Inside every roof window movable slats are mounted which can be adjusted with a winching system. Insulation is well ensured. From bottom to top: 1. a sheet of 25 mm polycarbonate, 2. a thick layer of still air, 3 a corrugation sheet.
Open Closed 80%