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mmezalick
AGG member
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Thu Jan 31st, 2008 11:51 am |
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Question,
Is there a listing of what the R-Value of a Dalle de Verre window, lets say 3/4" thick, would be.
Michael
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Krueger
Director
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Posted: Thu Jan 31st, 2008 04:58 pm |
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Michael, my first suggestion would be to look at the dalle chapter in the SGAA Reference and Technical Manual. If not mentioned, why not contact Blenko and see what they might say. Won't the R-value of an installation depend somewhat on the matrix used?
Barbara in Michigan
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troymoody
AGG member
| Joined: | Tue Oct 24th, 2006 |
| Location: | Tempe, Arizona USA |
| Posts: | 11 |
| Status: |
Offline
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Thu Jan 31st, 2008 10:20 pm |
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Barbara makes good points.
and have you tried contacting KEY RESIN for information? i am assuming you'll be using their epoxy. i would think they'd have some fact sheets.
sometimes it's a little tricky dealing with Blenko, good people, beautiful glass but just a bit of an odd bunch.
troy
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mmezalick
AGG member
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Posted: Thu Jan 31st, 2008 10:24 pm |
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Barbara and Troy,
Sorry to say but those were the first steps I took with no success. I was hoping someone had independent information on this topic. I have an architect that is asking.
Michael
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artfem
Administrator
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Thu Jan 31st, 2008 11:02 pm |
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Michael:
It is unlikely that you will find this information already calculated for a dalle de verre panel. The R value will be a function of the R value of the glass, the R value of the epoxy and the respective percentage of area in the composition that each will occupy. The R value of the glass is obtainable by using the R value for comparable thickness of plate glass (that number shoudl be available). The R value for the cured resin should be avialable also, but you will have to adjust for the thickness pour you will use. As a guess, I would be shocked if the R value is over 3. It will probably be around 2. The resin will be a slightly better insulator than the glass.
Basically, it will be (the area of resin divided by the total area times the R value of the resin) + (the area of the glass divided by the total area times the R value of the glass).
Art Femenella
Last edited on Thu Jan 31st, 2008 11:05 pm by artfem
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mmezalick
AGG member
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Posted: Thu Jan 31st, 2008 11:14 pm |
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Thanks Art, That helps a lot.
Michael
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