The window sill angle, also known as the sill slope, refers to the angle of the bottom of the window unit.
In most window installations, particularly with products like Andersen Insert Windows, the sill is intentionally sloped outwards. This slope is crucial for effectively directing water away from the interior of the home, preventing potential water damage.
Therefore, understanding and, when necessary, determining the sill slope is a key part of window replacement and installation. This is especially important when retrofitting older windows, as the existing sill angle might not be optimal for proper water drainage.
