| Traditionally horticultural glass has been used. Sunlight is allowed to stream into the greenhouse for maximum light and warmth. | You may prefer polycarbonate for optimum safety; virtually unbreakable, its twin wall construction retains heat and diffuses sunlight to avoid scorching your plants. | By choosing small pane toughened glass, you can be sure of added safety, whilst allowing sunlight to penetrate the glass just as horticultural glass does. | You can also choose large pane toughened glass which comes in single sheets. |