Thermal screen helps growers maintain climate control throughout the year. When closed during the summer months, it cools the greenhouse and allows the heat inside the greenhouse to be reduced to the optimum level for the plant. If closed at nights during winter time, it reduces the heating costs. By reducing the total area to be heated, it allows for easier and more economical heating of the greenhouse. It also reduces the loss of heat from the roof by creating an attic like air barrier.