Reviewed guide
How to Find Ordinary Air Leaks Around a Window
Find likely window air leaks with safe observation, classify moving and fixed joints, screen moisture and combustion risks, and record what to seal.
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Draft Diagnosis
Use observation and safe checks to map likely air-leak paths.
Safety boundary
Observation and low-risk surface weather-sealing that does not modify combustion, egress, wiring, structure, or drainage. For immediate danger, leave the area and contact emergency services or the appropriate utility. Do not approach energized, contaminated, unstable, or otherwise hazardous areas.