Low E coating

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Low E coating

#1 Post by Window2728 »

For okna windows (5 series/deluxe slider) with ClimaGuard 70/36 glass package. How unlikely is it that the low E coating be installed on the wrong window pane by okna? I'm aware that okna doesn't actually manufacture the glass, but buys the ClimaGuard 70/36 glass from Guardian.

Question: when okna receives the ClimaGuard 70/36 glass from Guardian, and makes the windows. Have you ever heard of it being installed wrong with incorrect orientation inside the window? Without purchasing electronics. Is there anyway for homeowners to check their windows for this specific error if it were ever to have occurred.

The new windows are not keeping heat in the house set to 70 degrees, and house heater is always cycling on and off much too frequently for new windows and wondering what it might be? Thanks.

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Re: Low E coating

#2 Post by TheWindowNerd »

Easy enough to check.
If the coating was placed on surface 1 or 4 you can use a cheap continuity tester to rule that out.
To check surface 2 or 3 placement a flame held up against the glass will show 4 reflections. if one is a different color it is the low e.

wayne theWindowNerd.

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Re: Low E coating

#3 Post by masterext »

The chances are second to none. I wouldnt worry about it.

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Re: Low E coating

#4 Post by HomeSealed »

This can happen from time to time during the the assembly of the IGU. That said, you would know very quickly, and when it happens it typically on one unit. I've never seen this issue across a "batch" of windows. The type of low e used isn't meant for much contact or for much exposure to moisture, it will react quickly and look like fog on the glass. That will happen within days of installation if on the outside.

If on the interior surface, it wouldn't hurt energy efficiency anyway... at least not until it degrades which again is visible once that happens. As mentioned above, if they have been installed for a while and you see no fogging on the glass, the chances of it are slim to none.

As for your issues keeping the home warm, you have a great window installed, you are probably looking in the wrong place. How is your attic insulation? Have you ever had an energy audit completed? It would be advisable. The HVAC equipment itself could be another source, even something as simple as changing the furnace filter.

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