The slope of the natural stone exterior windowsill
In order to save a complicated degree measurement, one can follow the following rule of thumb: Window sill width 15 cm = approx. 1,5 cm incline
Window sill width 20 cm = approx. 2 cm incline
Window sill width 30 cm = approx. 3 cm incline
Window sill width 40 cm = approx. 3,5 cm incline
Finally, seal the joints between windowsill, window frames and window revealings with natural stone silicone. If you have any questions about the measurement of stone windowsills, we are happy to help you; Call or email is enough. All statements without guarantee.