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Will Window Film Destroy double pane windows?


TXmat's Avatar
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06-27-11, 11:47 AM   #1  
Will Window Film Destroy double pane windows?

I have double pane windows - the kind with a gas in between the glass - that face the south west and get the HOT South Texas sun. The sun is fading the furniture so I want to block the damaging UV rays. Film seems to be the easiest solution, but I have heard it will heat the gas between the panes to the point of rupturing the seal. Is this true or just a myth?

 
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06-27-11, 12:07 PM   #2  
It can happen. The cheaper Home Center films even warn you of that. Better films like 3M will replace the glass if it occurs, but you have to pay for Pro installation. No window manufacturer will warranty it.

Depending on the windows...it can be cheaper just to order new sashes from the manufacturer with a LoE coating and tint if desired.


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TXmat's Avatar
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06-27-11, 12:17 PM   #3  
Other than replacing the windows or putting curtains over them, is there any other solution that is not as expensive as replacing the windows?

 
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06-27-11, 12:54 PM   #4  
Awnings are good...but good quality is not cheap....and sorta old school..though very effective


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Just Bill's Avatar
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06-27-11, 04:05 PM   #5  
As I understand the process, reflective film installed on the outside will not harm the IGU(insulated glass unit). However, films installed on the interior will reflect heat out, that will overheat the IGU causing damage. Disclaimer: I could be wrong!!!

 
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06-27-11, 05:46 PM   #6  
I understand the same thing to be true, Bill.

 
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06-28-11, 07:20 PM   #7  
No window manufacture I know of will honer a seal failure claim under warranty if there was any type of aftermarket film applied. To cut down on UV rays laminated glass is your best solution. Cardinals Low E 366 glass cuts UV rays down by about 95% IIRC. Laminated is 99.99%

 
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09-21-11, 01:31 PM   #8  
Window Film on Dual Pane windows will not destroy your windows. This is what the glass industry wants you to think. In fact you can get better performance with film then any high end glass for a fraction of the price and with a better warranty. But you have to know what products are safe on what glass types. A few of the real manufacturers actually match your existing glass warranty and will cover full replacement cost of the window. In all reality all seals will fail on any IG unit. I am sure that 99.9% of the glass replaced from seal failure has never had film on it. The problem is the DIY consumer has no access to these products.

 
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