Windows, Light & Air

Windows, Balconies & Ventilation

Where to place openings, how big to make them, and how to shade them on each façade.

Traditional Vastu guidance

  • More and larger windows on the north and east; fewer and smaller windows on the south and west.
  • Balconies and verandas are preferred on the north and east.
  • Windows in even numbers are often recommended.
  • Doors and windows should open smoothly without creaking.

Practical & building science

  • North: generous glazing, minimal shading needed.
  • South: horizontal overhangs or chajjas block high summer sun while admitting low winter sun.
  • East and west: low sun angles — use vertical fins, deep balconies, jaalis or external blinds. West glass is the biggest source of afternoon heat gain.
  • Cross-ventilation needs openings on opposite or adjacent walls. Ventilators placed high on walls let hot air escape.
  • Indian building codes have long required window openings in habitable rooms of roughly one-tenth of the floor area or more; check your local bye-laws.

Checklist

Tick off what your home already has. (Your ticks are not saved or sent anywhere.)

Common challenges

Large west-facing glass wall

Add external shading (much more effective than internal curtains), solar-control film or a deep balcony; plant trees where possible.

Traditional Vastu recommendations are presented for cultural and educational interest and are not guaranteed to produce any particular outcome. For structural changes or safety questions, consult a qualified architect or engineer.

Ask about your windows, balconies & ventilation

From the library

Further reading

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