Beyond the Splash: Understanding the "Vapor Pressure" Problem In Singapore, we tend to worry about the roof only when we see water dripping from the ceiling. But by the time that drip appears, the damage has likely been brewing for months. In 2026, our local climate is shifting toward sustained higher humidity levels. This creates "Vapor Pressure"—a phenomenon where moisture trapped inside your concrete slab or under your roof tiles expands as it heats up during the day. If your waterproofing isn't "breathable," this pressure causes the membrane to blister and pop from the inside out. At
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