Mike Lamb Posted April 4 Report Share Posted April 4 I don't know if this is a problem or not. The interior perimeter of these thermal paned windows has a cracking plastic. None of the windows shows signs of a bad seal with fogging or moisture between the glass. Might this adversely affect the R-value? I will take any remarks. Thanks. Quote Link to comment Share on other sites More sharing options...
Les Posted April 5 Report Share Posted April 5 cracking plastic, in and by itself, would not affect the performance of window. I suspect it is just cosmetic. Nearly all vinyl will eventually crack. I wouldn't think the plastic does anything other than look good. 1 Quote Link to comment Share on other sites More sharing options...
Jerry Simon Posted April 5 Report Share Posted April 5 (edited) Seen that in hundreds of sashes, though that is by far the worst. Ain't takin' kindly to UV rays, I suspect. R-value? Should one really care with a crap product like that? Edited April 5 by Jerry Simon Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted April 5 Report Share Posted April 5 It's a desiccant strip. It's there to absorb water vapor trapped at assembly. It appears completely desiccated. While largely cosmetic, some of the better manufacturers will warranty it. 1 Quote Link to comment Share on other sites More sharing options...
Jerry Simon Posted April 5 Report Share Posted April 5 1 hour ago, Tom Raymond said: While largely cosmetic, some of the better manufacturers will warranty it. That may be true, but I've never seen such in a *quality* window. Quote Link to comment Share on other sites More sharing options...
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