Much of Central India, including Bhopal and Indore, experiences hot and dry summers, a strong monsoon and short, mild winters. Buildings that respond to this rhythm are more comfortable to live in and cost less to run. The good news is that the most effective measures are design decisions, not expensive equipment.

Orientation comes first

The position of a building on its plot, and the direction its main rooms face, has more effect on comfort than almost any later decision. As a general approach, long facades facing north and south are easier to shade than those facing east and west. West-facing walls receive harsh afternoon sun in summer, so they benefit from buffer spaces such as stairs, stores and service areas, or from deep shading.

Shade every opening that sees the sun

Windows let in light, but unshaded glass also lets in heat. Overhangs, chhajjas, vertical fins, louvres and verandahs all reduce solar gain. The right device depends on orientation: horizontal shading works well on south-facing openings, while vertical fins or screens are more effective against low east and west sun.

Design for air movement

Cross ventilation, with openings on opposite sides of a room, helps to carry heat away, particularly in the evenings. Courtyards, stairwells and high-level vents can create a stack effect that draws warm air upward and out. These strategies work best when they are part of the plan from the start.

Use thermal mass wisely

Heavy materials such as masonry and stone absorb heat during the day and release it later. Used thoughtfully, with shading and night-time ventilation, thermal mass helps keep interiors stable through hot days. Roofs deserve special attention, since they receive the most sun of any surface.

Plan for the monsoon

Heavy seasonal rain tests every building. Generous overhangs protect walls and openings, roof drainage must be sized and detailed carefully, and plinth levels should keep water away from the building. On sloping sites, common around Bhopal, surface water needs a planned route around and away from the structure.

Choose materials for the climate

Locally suited materials often perform best: they cope with heat, rain and dust, and are easier to repair. Light-coloured roof finishes reduce heat gain, and durable external finishes reduce maintenance after each monsoon.

Bringing it together

None of these strategies is new. Traditional buildings across the region used courtyards, thick walls, jaalis and verandahs for exactly these reasons. Contemporary architecture can apply the same principles with modern materials and planning. Read more about our sustainable design approach, or talk to us about your site.