04/05/2026
Fully glazed buildings look clean, global, and undeniably attractive. You see them in fast growing Asian cities and across American skylines and it is easy to understand why a client would want the same language here in Nairobi. Glass feels modern. It signals openness and status. I get it.
But the sun does not negotiate with aesthetics.
What we call sunlight is actually energy arriving in different forms. The part we enjoy as brightness also carries heat. When that energy passes through glass, it changes character. It comes in easily, but once inside, it struggles to escape. The space begins to behave like a greenhouse. The result is rising indoor temperatures and an almost immediate dependence on air conditioning just to make the space usable.
Now place that same glass on all four sides of a building in a tropical city and you begin to see the real challenge. The eastern side welcomes a gentle morning sun that most people enjoy, but by mid morning it is already introducing discomfort. The western side is far less forgiving. Afternoon sun is harsher, more intense, and it lingers. That is where most buildings quietly lose the battle and compensate with machinery.
This is where design stops being about copying an image and starts becoming about understanding environment.
If a fully glazed brief is non negotiable, then it must be handled intelligently. The first line of defense is the glass itself. Not all glass is the same. There are types that reflect a significant portion of heat while still allowing light in. To put it simply, they behave like a good pair of sunglasses. You still see clearly, but the sting is taken out.
Then we begin to shape the sun before it even touches the glass. On the eastern and western sides, shading becomes critical. Horizontal projections work well where the sun is higher, while vertical elements step in when the sun is lower and more direct. Sometimes a combination of both creates a quiet filter, like a tree canopy that breaks light into softer, usable pieces.
Depth also becomes a design tool. When windows sit slightly recessed rather than flush with the outer wall, the building creates its own shade. You will notice this in some older buildings where openings feel tucked in. That was not an accident. It was climate intelligence long before we started naming it.
Planning of internal spaces matters just as much. Not every room needs equal exposure. The more heat sensitive spaces can be positioned away from the most aggressive sun, while service areas quietly absorb the harsher edges. It is less about compromise and more about choreography.
And then there is air itself. When buildings allow controlled movement of air, they shed heat more easily. A well ventilated space can feel dramatically cooler even before mechanical systems are introduced. Good design reduces the burden on machines. Poor design depends on them.
So yes, a fully glazed building in Nairobi is possible. But it is not just a stylistic decision. It is a technical one. When handled well, it can be elegant and comfortable. When handled casually, it becomes expensive to run and difficult to live in.
This is the quiet work behind the drawings that many people never see.
If you have ever wondered why some glass buildings feel pleasant and others feel like ovens by mid afternoon, that curiosity is exactly where good architecture begins.