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greenhouse covering

Glass is the traditional greenhouse covering. It lasts indefinitely although it will become brittle with age. Because glass is breakable it is more difficult and dangerous to install. It also requires a much sturdier frame than plastic covered greenhouses. Glass has undergone many improvements in recent years. Among the most important is increased strength (double and triple strength ratings) to resist breaking. Larger panes are also available because fewer structural members are needed the more light can enter the greenhouse. Glass can also cut down on heat loss and make energy more efficient.