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 Post subject: Heat Tolerance of Vinyl Windows
PostPosted: Thu Oct 31, 2013 8:14 am 

Joined: Thu Oct 31, 2013 8:06 am
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We purchased windows in 2008 that were manufactured by a company that is no longer in existence. we have no warranty. We are ready to exterminate our home and have no idea if these vinyl windows will tolerate the 140 degree temp for 2 hours. Our installer as suggested that while the glass will be fine, the windows could develop cracks. Please advise. Time is of the essence, our appointment is Monday, Nov. 4.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Thu Oct 31, 2013 11:38 am 

Joined: Wed Feb 01, 2012 9:14 pm
Posts: 399
Location: New Jersey Window Pro- Northern NJ and Central NJ
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What is the name of that manufacturer?


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Thu Oct 31, 2013 12:37 pm 

Joined: Thu Oct 31, 2013 8:06 am
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Our windows were manufactured by American Weather Seal. I talked to someone with the Window manufacturers Association. He asked me to check for a gold seal on the sill or the stiles. Nothing. I know this company was owned in part by Monarch Holdings, but that co. no longer exists. I spoke with Monarch Building products they deny any connection. No one there could answer the heat limit question. We have no warranty.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Thu Oct 31, 2013 7:39 pm 
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Joined: Wed Apr 04, 2007 11:21 pm
Posts: 3684
Location: DC Metropolitan Area-Maryland/Virginia/DC
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Heat of deformation temperature on vinyl (that used in windows) is usually around 150 - 160.

If you stay below that, you should be fine structurally but I am not sure what impact, if any, there is on insulated glass units.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Thu Oct 31, 2013 11:09 pm 

Joined: Thu Oct 31, 2013 8:06 am
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Our installer said the glass would be fine at that temperature, but he was afraid the vinyl might seem fine now, but develop cracks as time went on. Others have said those windows get much hotter than 140 when the sun is directly on them.
Thanks for taking the time to respond in our hour of need.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Fri Nov 01, 2013 3:39 pm 

Joined: Tue Dec 13, 2005 8:57 pm
Posts: 113
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The glass will be fine as long as the heat applied to the windows is consistent.

IGU seals depend on the spacer and sealants used. Some of the non-metallic spacers tend to be heat sensitive, but 140°F should be low enough (for the short duration) that they should be okay. I wouldn't want to hold 140°F for an extended period with some systems though.

I don't know what IG system that manufacturer used.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Sat Nov 02, 2013 7:07 pm 
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Joined: Fri Mar 11, 2005 3:58 pm
Posts: 1334
Location: Northern & Central Illinois, Chicago suburbs
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I worked for a LP Weatherseal dealer in the 70s and up to the mid 80s and I remember one of their top salesmen who told people that these were the same windows they were using in the space shuttle. With that in mind, ...they should be fine. :lol: :lol: :lol:


.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Wed Nov 06, 2013 4:27 pm 

Joined: Tue Oct 09, 2012 8:20 pm
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Any update? Gotta be honest, it would make me nervous.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Mon Nov 11, 2013 10:47 am 

Joined: Thu Oct 31, 2013 8:06 am
Posts: 4
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We successfully completed the heat treatment on Nov. 4. All windows appear to be operating as they were before the treatment. Our technician explained that while the ambient air temp would range between 120 and 140, they were not blowing the air directly on the windows. Rather they were targeting the closets and mattresses and baseboards. We, of course, are still disappointed that American Weater Seal closed their doors leaving us with no warranty. Our installer has been replacing glass packs, etc., for his customers at cost, making no profit on warranty work for Americn Weather Seal. I was given a phone number for Monarch Holdings who appeared to own AWS. When I called that number it was answered by Monarch Materials. The receptionist vehemently denied any connection with AWS, and Monarch Holding. I still think it is no coincidence that Monarch Materials answers the phone when I dial the number for Monarch Holding. Very disappointing. Thank you all for your concern and comments.


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 Post subject: Re: Heat Tolerance of Vinyl Windows
PostPosted: Mon Nov 11, 2013 5:51 pm 

Joined: Wed Feb 01, 2012 9:14 pm
Posts: 399
Location: New Jersey Window Pro- Northern NJ and Central NJ
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Thats why its of the utmost importance to get a high end vinyl brand such as Okna, Soft lite, Sunrise, Gorell, or Affinity.
These windows can withstand the heat in the Arizona desert as well as the cold in Canada.
A low end brand will not be able to withstand those extremes and warping will be an issue.


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