How Rainscreens Work
Rainscreens don't just keep the rain out: they also encourage drying in case water does manage to get in.
If you have ever gone camping, you have probably used a simple rainscreen—a tent fly. While there are many ways for a tent to get wet inside, a fly at least keeps rain out; it can do so because the frame keeps the fly separate from the tent fabric.
A rainscreen system for a building works similarly, keeping the cladding separate from the building through the use of furring strips or a specialized rainscreen product. Though they come in three main forms, all rainscreen systems rely on a space between the cladding and the exterior wall to prevent water from penetrating the structural wall assembly.
Published October 5, 2011
Melton, P. (2011, October 5). How Rainscreens Work. Retrieved from https://www.buildinggreen.com/primer/how-rainscreens-work