Natural light provides a sense of orientation, affecting our surroundings and marking the passage of time. Glass enables us to control and manipulate light to our advantage.


"The sun is the great luminary of all that lives. It should be used as such in the design of every house”
-Frank Lloyd Wright


Daylight is the source of life and essential to our wellbeing, development and health. The great architects of every age have understood this, captivated and inspired by its necessity.

Glass enables us to control and manipulate light to our advantage. A window is a link between interior environments, where we live and work, and the outside world.

It can determine the quality of a building, in terms of both architectural design and interior ambiance.


Building with Natural Light


Light levels and their effect on interior spaces, can influence our daily activities and frame of mind. Some general suggestions are:

Kitchen To open up areas where we spend much time during the day, such as kitchens, dining rooms, reception rooms and offices

Sunlight To encourage natural light into areas of study and work, at home and in the workplace

Ventilation To ensure that rooms are properly ventilated, for health and hygiene reasons

Fresh airTo try as far as possible, to include an opening light in humid rooms, such as bathrooms and kitchens. The ability to freshen and circulate the air by opening a window helps eliminate condensation and promote hygiene

Windows To design houses or buildings so that all living areas have access to opening windows

Greenery To take the external surroundings into account (nearby buildings, vegetation, natural features)

Both sides To provide natural illumination from more than one direction wherever possible. Glazing on two opposite facades balances lighting levels, softens shadows and opens up the room space


Aesthetic Drivers:


There are two drivers of aesthetics:

  • Visual light performance
  • Reflection

Visual light transmission

It is defined as the percentage of the light transmitted through the glass.



The reflection of the glass depends on the type of coating and also the position of the coating used on the glass, Lower external reflection helps in the true colour rendering of the building and it is normally suggested to have lower internal reflection to minimize the night time glare.


Visual Comfort


Most people spend much of their day either at work, at home or in an educational establishment. The quality of the light in their surroundings has considerable implications on their safety, health, state of mind and even their efficiency.



visual omfort

The most important points to remember about natural lighting are as follows:

  • Position work areas close to windows
  • Facilitate visibility out of the building
  • Avoid direct sunlight in work areas to minimize the associated problems associated with glare
  • Distribute light evenly, avoiding strong areas of contrasts in the field of vision, which can result in problems associated with glare


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