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 Post subject: how long does the argon last in a window
PostPosted: Thu Apr 19, 2012 9:02 pm 

Joined: Thu Apr 19, 2012 8:25 pm
Posts: 4
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All things being equal and assuming no leakage, how long can i reasonably expect the argon in a window to last before it breaks down/disapates in a good, high-end window? how about Kypton?

I ask because a) the RBA sales dude was touting that they warrant their argon + gas X mix for 10 or 20 years (i forget) and b) seems silly to spend the extra money if it breaks down in just a few years.

I'm in the "starting to finall grok all the terms phase" of buying replacement windows and improved long term energy effeciency is one of my concerns/goals for the replacements. Currently i have an entire wall 1982 era anderson north facing fixed pane windows in the Lancaster, PA area that seem to just leak heat in the winter.

Thanks,
Mark


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 Post subject: Re: how long does the argon last in a window
PostPosted: Thu Apr 19, 2012 9:26 pm 

Joined: Fri Oct 27, 2006 11:23 am
Posts: 3372
Location: DC Metropolitan Area-Maryland/Virginia/DC
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Most good windows use a secondary PIB rubber seal and are built to European gas leakage specifications of 1% or less per annum.

I have personally inspected units that are 5-10 years old that have had +95% of the gas fill in them.

The gas does not break down in any capacity but tries to get past the spacer. The law of partial pressures is always driving that gas to areas of lower concentration.

RBA may warranty their glass for 20 years (against seal failure), but they only give you 10 year frame warranty.

Being out of PA, you have a cornucopia of fantastic windows to choose from.


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 Post subject: Re: how long does the argon last in a window
PostPosted: Fri Apr 20, 2012 7:46 am 

Joined: Fri Apr 17, 2009 3:05 pm
Posts: 1311
Location: SE PA & NJ; DFW/Metroplex
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As you know there are great vinyl windows available, there are ok vinyl available and then there is cr_ppy ones.
The premium units will last as long as anything else.
Fiberglass is also a great consideration.
what is your zip code?
thewindownerd.


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 Post subject: Re: how long does the argon last in a window
PostPosted: Fri Apr 20, 2012 8:33 am 

Joined: Tue Jan 06, 2009 9:02 pm
Posts: 370
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How were the windows tested for argon leakage? Who did the testing?


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 Post subject: Re: how long does the argon last in a window
PostPosted: Fri Apr 20, 2012 3:21 pm 

Joined: Mon Oct 11, 2010 11:14 am
Posts: 818
Location: New Jersey Window Pro- Northern NJ and Central NJ
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argon is argon and does not dissipate. it all comes down to the spacer system, the quality of the sealant being used, the number of sealants, and finally quality control .
most lower end window companies use cheaper sealants and are more concerned with pumping out as many windows as possible opposed to stringent quality control initiatives.


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