Moisture trapped between double-pane or triple-pane windows means the insulating seal has failed. We replace the sealed glass unit -- restoring clarity, insulation, and energy efficiency -- without replacing the entire frame.
The location of the moisture determines the cause and the fix. Here is how to tell the difference.
The hermetic seal has failed. Moisture has entered the sealed cavity between the glass panes.
Fix: IGU replacement -- the glass unit must be replaced.
High indoor humidity is condensing on the cold glass surface. The seal is fine.
Fix: Reduce indoor humidity with ventilation, dehumidifiers, or exhaust fans.
Normal phenomenon. Low-E glass is so efficient that the exterior stays cool enough for dew to form.
Fix: No fix needed -- this actually means your windows are working well.
We confirm whether your foggy window is caused by a broken seal (moisture between panes) or interior humidity (condensation on the surface). The fix is completely different for each.
We remove the failed double-pane or triple-pane glass unit and replace it with a new factory-sealed IGU -- matching the original glass type, thickness, and gas fill. Your existing frame stays.
When replacing a failed IGU, you can upgrade to Low-E coated glass for superior UV protection and energy efficiency. A smart investment that pays for itself in lower heating and cooling bills.
New IGUs are filled with argon gas between the panes for enhanced insulation. Argon is denser than air and significantly reduces heat transfer through the glass.
Multiple fogged windows in the same home? We provide volume quotes for whole-house IGU replacement. Replace them all at once or prioritize the worst windows first.
Failed IGUs drain your heating and cooling budget. We identify which windows have the worst seal failures so you can prioritize the replacements that save the most energy.
Free window condensation assessment across DC, Northern Virginia, and Maryland. We replace the glass, not the whole window.