[Greenbuilding] The beauty of STEEL FRAME WINDOWS.............?????

[Keith Winston]

Perhaps you are saying you're going to keep the windows? The magnet 
trick will not outweigh the steel frames (I've never seen thermally 
broken steel windows, and even thermally broken aluminum windows merely 
brings them into the "pretty miserable" category, generally). I would 
probably replace those windows.

Keith


Kathy Cochran wrote:
> Okay, I have a question.  I am remodeling a house built in 1940.  Steel
> frame casement windows.  Single pane.  Northern California.  COLD in the
> winter!  I think the BEAUTY of steel frame windows is that MAGNETS can
> stick to them and hold up "hand-made, quilted and batted" insulation
> "shades".  What should I stuff them with...............aluminum [foil] in
> the middle or just batting like a nice warm quilt?  Please advise.  Winter
> isn't TOO far away.
>
> Thanks.....Kathy Cochran
>
>
>   
>> [Original Message]
>> From: Keith Winston <keith at earthsunenergy.com>
>> To: Greenbuilder list <greenbuilding at listserv.repp.org>
>> Date: 8/2/2007 1:02:33 PM
>> Subject: Re: [Greenbuilding] Windows - double hung
>>
>> Hi And welcome John (and hi Laren):
>>
>> That's a good article you linked to, John. Does a nice clear job of 
>> spelling out shortcomings of double-hung (I'd never thought about the 
>> double-sided exposure of the bottom edge of the upper sash issue, for 
>> example).
>>
>> And thanks for the addendum Laren, like so many things its one of those 
>> things (window screens) that I knew all the information but hadn't put 
>> it together and considered implications in a consistent way. Thanks for 
>> helping me do so.
>>
>> Warmly, Keith
>>
>>
>> LarenCorie wrote:
>>     
>>> From: "John E. Beeson" <jbeeson at quinnevans.com>
>>>
>>>   
>>>       
>>>> does anyone recommend a manufacturer that makes a good
>>>> double-hung?
>>>>
>>>> And yes, I read this already, but I'm trying to match the historic
>>>> windows:
>>>> http://www.thermotechfiberglass.com/Column3.htm
>>>>     
>>>>         
>>> Hello John;
>>>
>>>   There is another factor, that virtually all of the window
>>> manufacturers, and the article above, miss, which makes
>>> all sliding and hung windows even less energy inefficient,
>>> compared to hinged windows.   It has to do with Solar
>>> gain, and has been left out of every claim of Solar trans-
>>> mittance, I have seen from a manufacturer. First, sliding
>>> windows are set deeper in their jambs, so they receive
>>> less sunlight at higher angles of incident. This might not
>>> be very important, except for the second, far more
>>> important factor.   All of the sliding windows put their
>>> screening on the exterior, where it blocks 15-20% of
>>> the sunlight, from ever getting to the glass. The screens
>>> also reduce the opening size, leaving much of the sun-
>>> -light to just shine on the sill, or jambs, outside of the
>>> actual  window.     You will not see this mentioned in
>>> any of the manufacturer's literature, and if you mention
>>> it to any of the window sales people (this can be fun,
>>> and even profitable, if you turn it into a question and
>>> a bet ;O), they will hear something they never thought
>>> about before.  However, in any heating climates, like
>>> here in Michigan it is a very important factor.  In the
>>> Ann Arbor area, south facing windows should gain
>>> more heat than they lose, every month, except may-
>>> -be December. They should reduce the heating bills.
>>> However,  when you stop 30% of your Solar gain,
>>> by placing a screen a few inches out in front of the
>>> glass, you are definitely not being green.    Hinged
>>> windows place their screens inside, where they do
>>> not shade the glass.   This is a critical factor on all
>>> exposures, except north. In southern states, where
>>> cooling is a greater factor than heating, you will
>>> do better with double hungs, because of their
>>> shading screens, and operable top sashes.
>>>
>>> -Laren Corie-
>>> Natural Solar Building Designs, Since 1975
>>> www.LarenCorie.com
>>>
>>> -LittleHouses- http://groups.yahoo.com/group/LittleHouses
>>> -Energy Self-Sufficiency Newsletter- Free at  www.rebelwolf.com
>>> -WoodGas- Power from Wood. http://groups.yahoo.com/group/WoodGas
>>> -Refrigerator Alternatives-
>>> http://groups.yahoo.com/group/RefrigeratorAlternatives
>>>
>>>
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>> -- 
>> Keith Winston
>> Earth Sun Energy Systems
>> Hyattsville, MD 20781
>> 301-980-6325
>> send me mail at 
>> keith at the company below
>> www.EarthSunEnergy.com
>>
>>
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>>       publisher of Environmental Building News and GreenSpec(r)
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>>     
>
>
>
>   

-- 
Keith Winston
Earth Sun Energy Systems
Hyattsville, MD 20781
301-980-6325
send me mail at 
keith at the company below
www.EarthSunEnergy.com