Condensation between panes in Point Loma, San Diego
Condensation or fog that forms between the two panes of glass, not on the interior or exterior surface, is a sign the insulated glass unit's seal has failed. This is different from ordinary condensation on the room-side surface of a window, which is a humidity issue, not a broken seal.
Salt air corrodes aluminum frames years faster on the coast.Salt air off the water is the defining factor for windows here. It pits and corrodes aluminum frames and hardware faster than anywhere inland, so original aluminum sliders that would last decades in East County often need replacement within 15-20 years near the water. Marine-layer humidity also works into failed weatherstripping and glazing compound faster on exposed, west-facing units.
The hillside homes in Roseville, La Playa, and along the Sunset Cliffs edge sit in direct salt-air exposure, where aluminum window frames can pit and seize within 15-20 years, well short of a normal service life. The 1950s-60s tract homes on the Point Loma mesa are reaching typical seal-failure age on their original dual-pane units, and coastal-rated vinyl with stainless hardware is worth the upfront cost near the water.
What causes it
- Failed IGU seal letting humid air into the sealed cavity between panes
- Loss of the argon or krypton gas fill through the same seal failure
- Age: most IGU seals reach the end of their service life somewhere between 10 and 20 years
How it gets fixed
- IGU glass replacement when the frame and sash are sound
- Full window replacement when the frame is also compromised
What it costs to fix in Point Loma
Pricing is the same across San Diego County with no upcharge for Point Loma. We confirm a written quote before any work starts.
Condensation between panes questions in Point Loma
Why does this happen in Point Loma?
Condensation or fog that forms between the two panes of glass, not on the interior or exterior surface, is a sign the insulated glass unit's seal has failed. This is different from ordinary condensation on the room-side surface of a window, which is a humidity issue, not a broken seal.. In Point Loma, salt-air corrosion drives the work here, so pitted aluminum frames, seized hardware, and failed seals on windows facing the harbor and ocean lead the calls, and corrosion-resistant vinyl or fiberglass is the standard replacement., which shapes how this shows up.
What is the difference between condensation on the glass and condensation between the panes?
Surface condensation (on the room-side glass) is a humidity and temperature issue that can be managed with ventilation or a warmer glass surface. Condensation between the panes means the sealed unit itself has failed and the glass needs to be replaced.
Can I dry out condensation between the panes?
No. The cavity is sealed and not accessible without replacing the glass unit. Any moisture inside will keep recurring because the seal that is supposed to keep it out has already failed.
Does condensation between panes mean I lost the argon fill too?
Almost always, yes. The same seal failure that lets humid air in also lets the insulating gas fill escape, so the window has lost both its clarity and part of its thermal performance.
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