Costs: Rooflights | Features

Out-of-plane dome rooflight glazing optionsCapital cost (£/unit)Net present value for 60 years (£/unit)Service life (years)
Polycarbonate
3 mm thick polycarbonate pyramid rooflight single skin	120	386	15-25
3 mm thick polycarbonate pyramid rooflight double skin	180	510	15-25
3 mm thick polycarbonate rooflight triple skin	200	551	15-25
PVC
3 mm thick PVC domed rooflight single skin	120	402	15-20
3 mm thick PVC domed rooflight double skin	180	533	15-20
Glass
Safety glass to BS 6206, flat surface, double glazed with built-in kerb.	310	777	Oct-25
Georgian wired glass circular domed glazing, 600 mm diameter, 7 mm thick, glass to BS EN 572-3	290	488	60