Top lighting (skylights) works well with side lighting (windows) to maximize day lighting:

- Top lighting is able to bring light into centralized areas of a building

- Daylight is available throughout the day from both lighting from the sky and direct exposure to the sun.

- Modern transparent and/or translucent glazing can be utilized to avoid glare, aid in capturing sunlight at low angles and diffuse light to wider areas of floor space.

Even on overcast days, top lighting from skylights is three to ten times more efficient than side lighting.

Using the latest glass technology, glass skylights have higher thermal qualities: cooler in summer and warmer in winter. Dependent upon the types of glass installed, heat and UV ingress can be reduced by up to 78% (double glazed with tinted insulation) during summer and retention of warmth in winter by up to 69%.