Fog on windows that you can t wipe off happens to double pane windows when the seal around the glass fails.
Fix double pane window fogging.
Try cleaning the fogged windows to remove any buildup that isn t condensation on the glass.
However they can be cleaned and defogged easily enough without replacing any windows.
But once that desiccant is saturated the window will fog.
They have the tendency to fog up between the window panes and at times they might seem impossible to defog.
Double pane windows can be tough to clean.
Double pane foggy window repair can be done by drilling 2 small holes on the outside pane of glass.
Tips to fix condensation between double pane windows.
Double pane windows also called insulated or thermal windows are made with two panels of glass sandwiched over a spacer and sealant creating a space between the panes that is filled with air or with a gas usually argon or krypton.
Here is how you can defog them yourself.
It is this sealed space that gives the window most of its thermal performance.
Double pane windows also feature a spacer usually a hollow aluminum tube filled with desiccant that takes up moisture and prevent fogging.
Air penetrates the space between the panes and moisture gradually builds up and leaves fog.
It will still have about half of the insulation value of a new igu which is still better than for single pane windows.
The downside to double windows is that they can be prone to collecting condensation that results in parts of the window fogging up and decreasing visibility.
The process for how to fix foggy windows requires that you remove the moisture and rebuild the seal.
As the sun hits the window the trapped moisture condensation get released.
Then glue small plastic tubes in the holes to prevent further moisture from getting into the window.
If you can live with the foggy window you can just leave it.
Windows with just one seal are more likely to fail or fail sooner.
Replace the iguthe most common way to fix foggy double pain windows is not to clean it but to replace it.
If there s condensation between the panes of glass you re likely losing money on energy costs.