⌂HouseSymptomsHOUSE INTELLIGENCE

12 complete symptom paths42 guides and 60 questions in each 1,460 Grade A articlesOne searchable, connected knowledge library 140 official sourcesEvidence context with explicit limits

Failure Fingerprint

Failed insulated-glass seal

The sealed cavity between panes no longer remains dry.

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Typical location

Inside one sealed glazing unit

Timing fingerprint

Can vary with temperature but cannot be wiped away

Visible or audible pattern

Fog, haze or mineral residue trapped between panes

Best separating check

Try cleaning both exposed surfaces and compare adjacent units

Evidence that weakens this cause

Moisture wipes from the room-side glass

Do not confuse it with

Open a side-by-side comparison

Window condensation vs failed glazing sealThe pane surface and whether moisture can be wiped away provide the decisive clue.→