Comments on: R5 vs. R3.33 Windows http://www.solarglass.com/2009/06/22/r5-vs-r333-windows/ Replacement Windows & Doors Fri, 09 Apr 2010 21:00:03 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Gwenael Hagan http://www.solarglass.com/2009/06/22/r5-vs-r333-windows/comment-page-1/#comment-5246 Gwenael Hagan Tue, 29 Dec 2009 18:25:54 +0000 http://www.solarglass.com/?p=218#comment-5246 Vinyl is the weakest window frame material from a rigidity perspective - as compared to fiberglass, aluminum, or wood, has the highest expansion and contraction ratio, and is the most susceptible to deformation due to heat. Given all of that, I would be very uncomfortable looking a customer in the eye and telling them the added weight of triple glazing won't have negative mid- and long-term consequences. I say this even in light of the "lifetime" parts and labor warranties offered by many vinyl window manufacturers. On 1" IG (insulated Glazing Unit), the glass manufacturers have determined that a 1/2 inch airspace is optimal for dual glass units so I don't see the advantage of a 1" IG over the standard .75" IG. I agree with your comment regarding well made IG and elevation changes of 4600 to 5900. We offer Marvin's Integrity fiberglass windows which are manufactured in Fargo and shipped to us in Colorado for distribution throughout the front range and lower elevation mountain communities. These types of discussions always bring me back to the misplaced focus some in the window industry have on the pursuit of R5 windows. If you double, triple or quadruple today's energy prices, there are many energy efficiency measures that offer much improved return on investment. Vinyl is the weakest window frame material from a rigidity perspective – as compared to fiberglass, aluminum, or wood, has the highest expansion and contraction ratio, and is the most susceptible to deformation due to heat. Given all of that, I would be very uncomfortable looking a customer in the eye and telling them the added weight of triple glazing won’t have negative mid- and long-term consequences. I say this even in light of the “lifetime” parts and labor warranties offered by many vinyl window manufacturers.

On 1″ IG (insulated Glazing Unit), the glass manufacturers have determined that a 1/2 inch airspace is optimal for dual glass units so I don’t see the advantage of a 1″ IG over the standard .75″ IG.

I agree with your comment regarding well made IG and elevation changes of 4600 to 5900. We offer Marvin’s Integrity fiberglass windows which are manufactured in Fargo and shipped to us in Colorado for distribution throughout the front range and lower elevation mountain communities.

These types of discussions always bring me back to the misplaced focus some in the window industry have on the pursuit of R5 windows. If you double, triple or quadruple today’s energy prices, there are many energy efficiency measures that offer much improved return on investment.

]]> By: dan http://www.solarglass.com/2009/06/22/r5-vs-r333-windows/comment-page-1/#comment-5245 dan Wed, 16 Dec 2009 01:50:33 +0000 http://www.solarglass.com/?p=218#comment-5245 Many vinyl windows can easiliy get the R% with a triple. Many 1" IG with Argon even. The elevation change of 4600-5900 should not effect a well made IG. over 7500 change would however. Many vinyl windows can easiliy get the R% with a triple. Many 1″ IG with Argon even. The elevation change of 4600-5900 should not effect a well made IG. over 7500 change would however.

]]> By: Gwenael Hagan http://www.solarglass.com/2009/06/22/r5-vs-r333-windows/comment-page-1/#comment-5243 Gwenael Hagan Fri, 13 Nov 2009 17:31:15 +0000 http://www.solarglass.com/?p=218#comment-5243 There are a number of R5 fiberglass window manufacturers. The elevation of Toledo averages 600 feet. How would you supply a metro Denver market with elevations of 5,200 to 6,500? There are a number of R5 fiberglass window manufacturers. The elevation of Toledo averages 600 feet. How would you supply a metro Denver market with elevations of 5,200 to 6,500?

]]> By: George Eckerd http://www.solarglass.com/2009/06/22/r5-vs-r333-windows/comment-page-1/#comment-5242 George Eckerd Fri, 13 Nov 2009 16:39:40 +0000 http://www.solarglass.com/?p=218#comment-5242 We have a fiberglass R5 window now. We are a window manufacturer in Toledo, OH. Our new web site will be up and running next week. existing site is www.comfortlineinc.com We have a fiberglass R5 window now.

We are a window manufacturer in Toledo, OH.

Our new web site will be up and running next week. existing site is http://www.comfortlineinc.com

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