There is always a chance that incorporating a large glass roof lantern structure in your ceiling will result in heat loss and frigid rooms throughout the winter when compared to a well-insulated ceiling. The issue can be reduced by specifying an energy-efficient glazing system and also by incorporating blinds into your lantern. Equally, this large expanse of glass can also encourage heat gain during summer. The same applies to energy-efficient glazing and using blinds as an insulating layer. In particular cellular pleated roof lantern window blinds are particularly effective at insulating to prevent heat gain or loss, as the double-layered fabric is made up of pockets of air which act as a better insulating layer than a single fabric sheet. Efficient glazing and blinds are excellent ways of making your roof lantern room or orangery appropriate for usage all year long!