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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>We use magnets (strong rare earth) for attachment of screens –for an exterior storm window the mags can be recessed into sash or frame from the interior to avoid damaging the exterior (to within an 1/8 or ¼ of exterior wood – depending on magnet strength). A magnet cup or washer can be screwed to the sash (countersunk slightly or proud to allow weatherstripping compression ). Can be a very strong simple attachment capable of withstanding heavy winds.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Greenbuilding [mailto:greenbuilding-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Eli Talking<br><b>Sent:</b> November-30-12 3:47 PM<br><b>To:</b> Green Building<br><b>Subject:</b> [Greenbuilding] Interior Storm Windows<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Corwyn writes:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>The other way<em> (to avoid sweating on windows)</em> is to raise the temperature of the glass. Traditionally <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>this was done by putting the central heating output right under the <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>windows so that hot air washed over the surface warming it up. Now, the <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>solution is generally to increase the insulation value of the windows. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>The interior storm windows are a cheap way to do this, adding about R-2 <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>to a window for about $1.50 per square foot (if you make them yourself), <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>I make them for around $4.00 per square foot. Raising the temperature <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>of the glass will also increase comfort levels (even at the same air <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>temperature.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;color:black'>Corwyn</span><span style='font-size:14.0pt;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;color:black'>What kind of glazing do you use. </span><span style='font-size:14.0pt;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;color:black'>I am interested in using inexpensive storm windows as you describe to improve the performance of common standard and existing windows. If frame can be light and narrow, the visual impact would be minimized. I see the design task as making the stops to receive the storm sash. </span><span style='font-size:14.0pt;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;color:black'>Eli </span><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>-----Original Message----- <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>From: Corwyn <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Sent: Sunday, October 28, 2012 6:24 PM <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>To: Green Building <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Subject: Re: [Greenbuilding] Airtight windows <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>On 10/28/2012 1:20 PM, Sacie Lambertson wrote:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Our windows are starting to condensate at the base on the<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>> inside. Many of you have suggested this is the penalty of winter.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>> Isn't there anything I can do about it?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>See my previous suggestion for interior storm windows.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Here's the basics of when you will get condensation. When the dewpoint <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>temperature of the inside air is a the same as (or greater than) the <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>temperature of the inside surface of the windows (or anything else in <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>your house), that surface will condense water. So in order to avoid <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>condensation you need to either lower the dewpoint of the air inside, by <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>reducing the humidity, or increase the temperature of the inside surface <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>of the windows.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Whether the humidity is too high is a matter of perspective and some <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>controversy. Get a humidity gauge and measure what yours is. Generally <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>somewhere in the 40% - 60% range is recommended, but balance is between <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>being too dry (and the dry throat and colds that that produces) and <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>being too wet and the mold and mildew (and the allergies that <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>aggravates), so decide for yourself. That said, lowering the humidity <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>will reduce the condensation (and vice versa). One of the things we <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>generally see is that as people increase the air tightness of their <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>house they need to go from worrying about too low humidity to worrying <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>about too high humidity. At that point, you are probably in the place <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>where you will need to have supplemental ventilation (for fresh air <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>reasons), and an HRV will take care of the humidity issue.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>The other way is to raise the temperature of the glass. Traditionally <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>this was done by putting the central heating output right under the <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>windows so that hot air washed over the surface warming it up. Now, the <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>solution is generally to increase the insulation value of the windows. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>The interior storm windows are a cheap way to do this, adding about R-2 <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>to a window for about $1.50 per square foot (if you make them yourself), <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>I make them for around $4.00 per square foot. Raising the temperature <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>of the glass will also increase comfort levels (even at the same air <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>temperature.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Thank You Kindly,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Corwyn<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>-- <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Topher Belknap<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Green Fret Consulting<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Kermit didn't know the half of it...<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'><a href="http://www.greenfret.com/">http://www.greenfret.com/</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'><a href="mailto:topher@greenfret.com">topher@greenfret.com</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>(207) 882-7652<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>_______________________________________________<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>Greenbuilding mailing list<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>to Send a Message to the list, use the email address<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'><a href="mailto:Greenbuilding@bioenergylists.org">Greenbuilding@bioenergylists.org</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'>to UNSUBSCRIBE or Change your List Settings use the web page<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'><a href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;color:black'> <o:p></o:p></span></p></div></div></div></div></body></html>