Glossary termRoof Anatomy

Roof Leak

Also called leaking roof, water intrusion

Written byPRE Editorial Team
Last reviewedSep 2026
Reading time2 minutes

Quick definition

A roof leak is water intrusion through or around a roof assembly into the building or concealed spaces.

Leaks are symptoms, not causes. Diagnosis should trace water entry to roof details, penetrations, flashing, drainage, materials, or building movement.

Likely Sources

Diagnostic Approach

What it means for you

Why does roof leak matter?

Leaks are symptoms, not causes. Diagnosis should trace water entry to roof details, penetrations, flashing, drainage, materials, or building movement.

Sources

  1. PRE Editorial Reference Standard. Professional Roofing Encyclopedia.
    Tier 2 authority · industry
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Roof Leak | Roofing Glossary | Professional Roofing Encyclopedia