Net Free Vent Area calculation roof

The Apex Exhaust Engine: Negative-Pressure Bernoulli Lift, External Wind Baffles, and Multiphase Mist Exclusion at the Steep-Slope Crest

• October 6, 2026
• admin

Across modern residential estates, eco-hospitality villas in Wayanad, and contemporary coastal developments in Kerala, passive attic ventilation relies on natural thermodynamic convection: the stack effect. As solar radiation heats the roof deck, warm air inside the rafter bays expands, drops in density, and rises toward the highest point of the roof—the apex ridge. Under the …