How Do You Fix Rotten Window Ledges?
There are two basic types of window ledges: an exterior ledge made of a durable, waterproof material that is tapered to shed water away from the window and an interior ledge which is a metaphoric extension of the exterior window ledge. The interior window ledge is the part that the window shuts down upon, also called a sill, or stool. Using a prying tool to separate the apron. Use your utility knife to cut any caulking or paint between your ledge and your trim casing (if you have any) and against your window. In the example photo the window is not trimmed out and the ledge rests against plaster walls and the metal surround of the window. Cut along the bottom and sides of the apron as well. This will allow the trim wood to release more easily with less potential to damage the underlying wall.
