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Bulk water
Bulk water is rain or melting snow that can flow and soak materials.
Why it matters
Bulk water causes the fastest damage. If you control bulk water, you prevent most rot and mold problems.
Where people get this wrong
Bulk water is not the same as humidity. Humidity is moisture in air. Paint does not stop bulk water problems forever.
Real-world example
A small drip at a window corner runs every time it storms. The wall stays wet for days. That is bulk water doing quiet damage behind the scenes.
Where this hits your build
This affects how your home handles water. Water damage is one of the most expensive problems to fix, and it often starts with details that seem small.
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