“Maximize Natural Light
If you are undertaking a larger design or refurbishment project, consider:
Adding more windows if building permits allow.
Enlarging your windows by (most cost effectively) dropping the sills.
Replacing existing windows and choosing windows with smaller frames.
Replacing the glass so that it is one solid piece rather than broken up by fenestration bars or leaded light strips.
Adding a sun tube, a small reflective tube that lets light into windowless spaces that are near the roof, such as an upstairs hallway.
Adding a skylight to allow light to flood in and aid ventilation.”