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Why Tile Roofs Leak During Heavy Rain: Technical Root Causes Tile roofs are a hallmark of Singaporean landed properties, valued for their durability and thermal mass. However, these systems often remain perfectly dry during a drizzle but fail catastrophically during high-intensity downpours. In the roofing industry, this is categorized as a "dynamic load failure." At NearMeSG, our engineering-led approach focuses on the physics of water ingress. Understanding why tiles fail under pressure is the first step toward a "Real Repair" that lasts for decades. 1. The Mechanics of Wind-Driven Rain and