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Water Intrusion
Water intrusion is unwanted liquid water entering a building or a building assembly that should remain dry.
Water intrusion is unwanted liquid water entering a building or an assembly that should remain dry. Sources include rain, surface water, groundwater, and plumbing leaks; entry can occur through roofs, walls, windows, doors, or foundations.
Property operations example: record the observed water location and conditions separately from the suspected source. A stain identifies a symptom; it does not by itself establish the entry point or show that the cause was resolved.
Source: U.S. EPA, Moisture Control Guidance for Building Design, Construction and Maintenance, 2013, pp. 7-8.
Frequently Asked Questions
Is condensation the same as water intrusion?
They are different moisture mechanisms. Condensation forms when water vapor becomes liquid; intrusion involves water entering an area that should remain dry.
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