What is the difference between a hinged open roof and a retractable roof?
Retractable roofs provide the best possible growing environment when outside temperatures are warm enough since light levels can be optimised throughout the day, but can only be covered with flexible roof coverings. Open hinged roof greenhouses can be covered with both rigid and flexible roof coverings. When roofs are open, crops receive significantly lower light levels during the early morning and late afternoon when light is already in short supply and maximum light levels during the midday when light levels can be excessive. For a short slide show outlining the differences between retractable and hinged click here.
