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Current Board Posts

  • 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...

  • Thursday November 20, 2014

    Simonton 5500 spec questions

    I am putting an addition on my house and have decided to use a Simonton 5500 window. I am in Orlando, FL...

  • Wednesday November 19, 2014

    How to test the quality of a window?

    When companies bring vinyl window samples to your home (or when you're in a showroom), what kinds of tests should a consumer do...

  • Tuesday November 18, 2014

    Schuco aluminum commercial tilt and turn window repair

    how do i replace the multipoint latch gearbox on a commercial schuco tilt and turn...

  • Monday November 17, 2014

    Which is the most reliable replacement window on a budget???

    Hi All,
    I'm new to the forum, have been reading up for days, and was hoping for some individual...

  • Monday November 17, 2014

    any suggestion for the vinyl windows?

    Hi, i live in IL and i am planning to replace the aluminum windows to vinyl windows.one contractor quotes the 23 double hung...

  • Saturday November 15, 2014

    Cold weather window caulk recommendations

    What are some quality window caulks that would be ok for sub 40 temperatures? I live in MASS, and the temps here have...

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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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Fenestration Expert