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 Post subject: steel in vinyl windows
PostPosted: Tue Jun 09, 2009 8:15 pm 

Joined: Tue Jun 09, 2009 7:59 pm
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what is purpose of adding steel to a vinyl window ?


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 Post subject: Re: steel in vinyl windows
PostPosted: Tue Jun 09, 2009 8:38 pm 

Joined: Sun Dec 28, 2008 8:26 am
Posts: 72
Location: Central PA
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It's to prevent sagging and provide reinforcement in the vinyl frame, especially in the sash frames at the meeting rail on double-hung windows.

It's used in a lot of vinyl railing, like for decks and porches, too.


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 Post subject: Re: steel in vinyl windows
PostPosted: Tue Jun 09, 2009 11:59 pm 
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Joined: Fri Mar 11, 2005 3:58 pm
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Location: Northern & Central Illinois, Chicago suburbs
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jim r wrote:
what is purpose of adding steel to a vinyl window ?


It's to prevent deflection of the center rail of the window in the wind.


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 Post subject: Re: steel in vinyl windows
PostPosted: Sat Jun 13, 2009 11:15 pm 
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Joined: Wed Apr 04, 2007 11:21 pm
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Location: DC Metropolitan Area-Maryland/Virginia/DC
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Both guys are right. Design Pressure increases and sagging correction if you have a really weak extrusion.


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 Post subject: Re: steel in vinyl windows
PostPosted: Sun Jul 12, 2009 9:03 am 
it is an easy way to increase strength in a cheap vinyl extrusion. it is also a way to increase DP ratings for a high quality window. Schuco comes to mind.


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 Post subject: Re: steel in vinyl windows
PostPosted: Thu Jan 21, 2010 8:04 pm 

Joined: Wed Jan 20, 2010 6:38 pm
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while it is used quite a bit for added strength to vinyl bar. its also used to secure hardware to the vinyl. a lock under pressure would eventually pull loose if it was only screwed into the vinyl...


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