HouseSymptoms field intelligence
Symptoms
Start with the visible, audible, physical or measurable sign—not the name of the fault.
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Black spots around a window
Small dark marks can come from surface mold, soot deposition, dirt held by condensation or degraded sealant.
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Condensation between window panes
Moisture inside a sealed glazing unit usually points to a failed edge seal rather than room humidity alone.
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Condensation on the room side of glass
Water on the interior surface forms when humid indoor air reaches glass below its dew point.
