Troubleshooting · 5 min

How to Spot a Failed Window Seal

Moisture trapped in the gap between two panes is a seal problem. These notes help you tell that apart from water on the room side of the glass, then ask a contractor which repair fits the frame.

What you'll learn

  • Room-side mist versus a cloud you cannot wipe off the surface
  • A simple shade test that shows the moisture is inside the unit
  • Why the frame condition decides between a glass swap and a new window
  • What a long-standing stain along the edge usually means

Step by step

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Safety note

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