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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:black'>In modelling buildings you can predict the difference in performance between various glazing assemblies and for a new home the cost difference between a vinyl product with double glaze and a triple glaze is probably recoverable in a decent time frame. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>For a renovation the labour involved in restoring an older window (essentially sealing and either reglazing or providing a sealed storm) would be comparable and possibly more than a vinyl performance window as it involves not just refinishing (as Alan describes) but can include removing of trim, exterior and interior sealing and insulating cavities, repairing counterweights, etc. I actually think investing in the labour of restoration is preferable to buying more product and creating more waste, as its a local solution and creates labour. We have enough crappy new windows out there.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>John<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><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>Sacie Lambertson<br><b>Sent:</b> September-23-15 11:08 AM<br><b>To:</b> Greenbuilding<br><b>Subject:</b> [Greenbuilding] replacement window discussion<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>Having purchased an old 1883 intact with most of its originals inside and out, we are eventually going to be facing the question of the windows. I plan to gut the house and do double wall construction a la passiv haus. The windows for those are triple glazed and vastly expensive. Some argue double glazed with the 'insulating' shades is about as good as a triple glazed window. And some of you mention special shutters as an alternative too.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>I would like to read a further discussion on the merits of the various approaches, particularly useful from those engaged in a scientific approach like John Straube or Bob Klahn.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>We're a long way from the project, but are beginning to consider some details.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>thanks, Sacie<o:p></o:p></span></p></div></div></div></body></html>