wind driven rain eave louvers India

The Negative Pressure Trap: Droplet Kinetic Trajectories, Water-Separation Louver Physics, and Continuous Sub-Fascia Baffling in Monsoon Climates

• October 5, 2026
• admin

In balanced passive roof ventilation, the eave intake zone is the foundational engine of the entire system. Following the 1:150 rule, cool ambient air must enter continuously through the lowest perimeter soffits to replace the hot, buoyant air discharging through ridge exhaust vents. However, across coastal belts and high-exposure hill tracts of South India, the …