What matters
Roof exposure is usually the first issue. Insulation continuity, a ventilated roof layer, controlled glazing and exterior shading reduce heat before the air-conditioning system has to remove it.
Plan before manufacture
Kitchen equipment, lighting, people and door openings add internal heat. The cooling load and ventilation system should be calculated around real operation, especially for coffee machines, ovens and extraction.
Make the decision clearer
Good detailing prevents gaps around steel members, windows and service penetrations. These small junctions often decide whether the café stays comfortable during peak summer hours.