Under Deck Ceiling.
If you have a raised wooden deck you can make the area dry below and increase your outdoor living area or create more usable storage. This area then could easily be enclosed or you could have a screened porch as it is now a dry space.
The designs available are typically attached to the bottom of the deck frame but also can be placed below the decking and there are even some decking products designed for this. They consist of some form of panel that is sloped which will collect the water and direct it into some type of gutter and downspout. The panels vary in material from a plastic or vinyl to aluminum or Gavalume®. Their shapes may be looped up, looped down, flat or even hidden. Depending on the ceiling panel style they are either permanent or removable plus ventilation should be present to keep your joists dry.