Why do window seals go bad and how to repair for long term?
2/22/2023 at 9:12:43 PM
I had my windows replaced in 2008 and the panes were guaranteed for 10 years. In 2018, just on time, several of my windows started to show moisture inside the panes (the vacuum seal failed). Today, in 2023, it is more than half of the windows.
My neighbor has the same problem (it is our upstairs windows, which receive more sun than the others). He had his windows done about the same time, but with a totally different company.
I would like to replace the panes, but obviously I don't want to do this every 10 years! So I have two questions:
First, why does this happen? The windows in my office (I've been there for 20+ years) don't have this problem, they're much bigger and get lots of sun. Is this a "home market" product that is poorly manufactured?
Second, do any window companies offer 20-year warrantee on the seals?
2/22/2023 at 10:03:21 PM
Could be a few issues . Not using a primer sealer . Or a bad top coat of paint . Another issue could be when moisture becomes trapped and has nowhere to go this is the outcome .
2/27/2023 at 10:49:46 PM
Warranties of 20-30 or more years are marketing scams!! there is no such thing as lifetime warranty on anything. Most products can only be realistically trouble free to 15 years or a little longer if lucky. The fine print on these warranties are 10 pages long and exclude just about everything not under perfect conditions. The best thing to do is use a reputable proven manufacturer that also retails it. Do not go through 3rd party retailers and check the insulation and wood around opening when the window is removed, the installers are not responsible for repairs here and 50% of the future issues is due to this.
2/28/2023 at 12:00:57 AM
Ok, so given the variation of answers I got here so far, I decided to ask ChatGPT. Here's the answer I got:
Moisture between the panes in a double-pane window is usually an indication that the seal between the two panes of glass has failed. When the seal fails, it allows air and moisture to enter the space between the panes, which can cause condensation to form on the inside surfaces of the glass.
There are several reasons why the seal might fail, including:
1. Age: Over time, the seals around the window can deteriorate due to exposure to the elements.
2. Installation: If the window was not installed properly, the seal may fail prematurely.
3. Thermal stress: Extreme temperature fluctuations can cause the seal to expand and contract, leading to failure.
4. Physical damage: If the window is hit or damaged, the seal can be compromised.
When the seal fails, it can allow moisture to enter the space between the panes. This moisture can condense on the cooler surfaces of the glass, causing the appearance of fog or condensation between the panes.
Unfortunately, once the seal has failed, the only solution is to replace the window or the glass unit. This will require the help of a professional glazier or window installer.
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