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Current Board Posts

  • Sunday December 14, 2014

    Single Picture/Single Hung Hybrid to Two Double Hungs

    How involved would it be for an installer to remove one large (approx.) 64X66 window that consists of a center single hung and...

  • Thursday December 11, 2014

    Thermal Industries vs Okna in WI

    Looking at getting some replacement windows in Waukesha, just outside of Milwaukee. I have a quote for Thermal Industries and one for Okna,...

  • Tuesday December 9, 2014

    Glass Breakage

    That would more than likely be a "stress" crack. Either wind or temperature caused a fault in the glass to become a crack....

  • Saturday December 6, 2014

    What is the best energy efficient window for Dallas Texas

    Hi,
    I live in the Dallas-Ft Worth Texas area and need to replace 5 arched windows in the front of my house which...

  • Wednesday December 3, 2014

    Window Replacement Options

    I posted this on another forum before I found this replacement window specific forum. I know some people there also post here,...

  • Tuesday December 2, 2014

    Another need help with windows choice, Vytex, vs Soft-Lite..

    So I was set on Sunrise Vanguard windows, but the only seller in town messed up my order twice and was somewhat more...

  • Wednesday November 26, 2014

    How do I make this window square?

    I just installed my first replacement OKNA window. I took my time, checked for plumb level and square (or so I thought). Everything...

  • Sunday November 23, 2014

    Replacement window over very thin aluminum frame

    I am installing my first vinyl replacement window over an aluminum frame (stucco wall). In all the instructional videos and the instructions that...

  • Saturday November 22, 2014

    Reynolds Vinyl Window

    I purchased Reynolds Vinyl Windows in 1996 and they have condensation in most of them. I was told to get the model number...

  • Thursday November 20, 2014

    Warranty question

    Do lifetime/double-lifetime warranties for the best vinyl manufacturers (like Okna) typically cover only the product or do they cover labor as well? For...

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 Re: Core of the window

Author: Fenestration Expert (---.dyn.optonline.net)
Date:   

Since when you ask? Foam coring has been used to support weaker structures since the 1950's because it's inexpensive to use and easy to apply to all shapes. The "Tin Men" used the foam backing on paper thin aluminum siding to keep it from denting as easily claiming it was for insulation purposes but if you have ever seen a piece of it... it was void at every course for installation ease (defeating it's claimed purpose). Other uses have been shower basins, soles of shoes and as a packing material to ship fragile items due to it's rigitity. Common sense states that steel and aluminum do conduct but can't when concealed in non-conductive casings (i.e. the wiring in your house wrapped in vinyl) and is much stronger than wood or vinyl. As stated before... if your concern is energy usage reduction, remember a window is 80% glass, and glass is responsible for 60-80% of your heating and cooling bills... not the frames.

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Linda  
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Fenestration Expert  
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alex  
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Fenestration Expert