Repair Options for Foggy Thermal Double Pane Windows

Moisture, condensation or fog between insulated glass windows, double or triple pane, indicates that the seal on the window's glass has failed.

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Most modern windows are double or even triple pane glass. The glass panes are sealed and sandwiched between a metal spacer that contains silicon desiccant. It is called a Insulated Glass Unit (IGU). Over time the sealant begins to leak and moisture begins to collect between the panes. When the silicone desiccant can't absorb the moisture, then fog/condensation can develop on the inside of the glass. Eventually, the inside of the IGU will become etched.

Some companies drill a hole in the glass, squirt a cleaner between the widow panes, dry it out and then plug the hole in the glass. I didn't consider process a repair. If the seal is leaking, then it will continue to leak, allowing moisture between the panes. It's just a band aid... IMHO.

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[Know-How-Now]

There are hundreds of videos at Know How Now, subscribe so you can always find the channel…. It’s free. I always respect your time and do my best to keep the videos brief, but informative. Check out the channel with this link:

[MarioDallaRiva]

Ugh! The dreaded fog inside the double glass.
Well done 👏🏻

[FA-cdde]

Use a flexible spackle/puddy knife, I use about a 3" type along with a can of window cleaner called "spray away". I use spray away on the puddy knife for a lubricant and press against the silicone and rock the blade side to side as it plunges and you hear it hit the frame, then move along the whole perimeter

[peoplethesedaysberetarded]

Hmm. I enjoy watching your videos. Yet this one seems a bit bleak: “a thing failed, and wow, the new replacement they make isn’t as good as the original.” That’s a sad reality.