If you want to let the light in, then this is the product for you. This style of pergola roofing is made using polycarbonate, a form of plastic roofing which is sturdy yet flexible, cost effective yet extremely reliable and long lasting. It offers 99.9% UV protection as well as high thermal insulation. The roof sheeting transmits a natural but superior light producing a look similar to glass. It offers high impact resistance and strength to weather conditions such as hail. It is a superior solution to old school metal sheets due to the roof sheets weighing less and they are easy to maintain.