A number of different methods may be used to install exterior shutters. The approach used for your window will depend on the desired function of the shutters and configuration of the area surrounding the window.
Outside shutters may be installed to swing open and close over a window. For functional outside shutter installations, consult with the exterior shutter hardware supplier to ensure proper execution.
Most homeowners install exterior shutters only for aesthetic purposes. Panels may be attached directly into a building with external grade screws or bolts. Leave space (about ¼ inch) between the house and building to keep moisture from being trapped between.
Shutter caps add an extra barrier to the top of wooden shutters where water is most likely to penetrate the wood grain and damage the shutter panels.