Pergolas have been used in dwellings for centuries, classically, to add a shaded walkway, to link pavilions or to allow a sitting area which allows the breeze and sun to filter through. A pergola roof that usually used in a pergola depends on the availability of direct sunlight as well as the geography and natural features of the region. There are several different pergola roof ideas. Metal roofs are the best material to use for a permanent structure. They are durable and can be cut to any size. Steel will be the most expensive metal to use but aluminum and copper will be a cheaper alternative. Wood is the cheapest and most common material used in outdoor construction. The pergola is a solid frame for climbers so a natural roof will be formed if using wide leafed plants such as actinidia or banana plants.
Plastic and fiberglass are both light-weight materials that are transportable and durable. Plastic can be designed to look like wood if a more natural style of pergola is preferred. Fiberglass will be harder to find but is made from recycled materials and a greener alternative than plastic. Both materials protect you from UV rays without restricting natural light. A retractable canopy on the pergola roof will provide shade and be a temporary fixture. It will be more expensive than a traditional roof but will be useful when the pergola is alongside a wall or structure if climbing plants are not used.