once again, agonizing over how to get the best $ value and best thermal value out of a set of windows. for a relatively small premium (15-20%) I can go from your basic U-0.30 low-e argon clad casement wood window, to a similar triple glazed unit at U-0.25 or 0.24. <br>
<br>or...for something commensurate with the latter cost, go with a Euro UPVC 3x tilt-turn at maybe U-0.18 or lower. going to insulated frames and sashes takes the U's down even lower, but the cost increase steepens for that performance.<br>
<br>...or so they say...<br><br>at the same time, I've heard it said that european windows are rated differently, and that US or Canadian windows perform as well. <br><br>moreover, it is difficult to imagine that a few uninsulated air chambers in a set of vinyl sashes and frames can knock off 25% of total heat transmission.<br>
<br>looking to wiser heads to sort this out...<br><br>-a<br><br><br clear="all"><b style="color:rgb(0,102,0)">Alan Abrams</b><b style="color:rgb(0,102,0)"><br>Abrams Design Build LLC</b><br style="color:rgb(0,102,0)"><i style="color:rgb(0,102,0)">A sustainable approach to beautiful space</i><br style="color:rgb(0,102,0)">
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