A covered patio versus a pergola
A covered patio has a solid roof, a header and, usually, posts substantial enough to carry side tracks. The specification question is which opening and which material. A pergola has an open top and a frame designed to carry its own weight and not much else — so the first question is whether it can take the load of a screen system under wind, and sometimes the honest answer is that structure has to be added first.
- A patio header usually takes a housing without modification.
- A pergola frame may need reinforcement before screens are possible.
- An open top means rain still reaches the space regardless of the screens.