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Old 06-06-2013, 12:54 PM   #16
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Should I buy triple pane windows?


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Originally Posted by HomeSealed View Post
The total unit u value tests the complete window unit, fully assembled (glass, frame, weatherstripping, etc)
Will it be listed on the window as the "U" value or the "total unit u value"?

Thanks Again,
Uni

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Old 06-06-2013, 02:10 PM   #17
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Should I buy triple pane windows?


Just try to find a documented and universally accepted "U" value for window assembly.

A wall with R19 insulation can have an actual R9, just as a comparison with the real world. The "Pink Panther" does not like it or dispute it, since the test is a universally accepted laboratory testing industry (costly and realistic).

Actual product assemblies depend on all materials and cannot the claimed for other size, shape, weight and configurations, but window people ignore the facts in the interest of peddling and advertising.

Dick
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Old 06-06-2013, 03:02 PM   #18
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Should I buy triple pane windows?


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Originally Posted by Unicornz0 View Post
Will it be listed on the window as the "U" value or the "total unit u value"?

Thanks Again,
Uni
No problem, you are welcome.

If windows have an NFRC label it will list "U-factor" (same thing as U-value) and it will be the rating for the entire unit, not just the glass.

CoG U value is only useful when comparing specific glass package make ups - for example if you wanted to compare the perfomance values of two different Low-E coatings in an identical IGU configuration.
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Old 06-06-2013, 09:23 PM   #19
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Should I buy triple pane windows?


Quote:
Originally Posted by concretemasonry View Post
Just try to find a documented and universally accepted "U" value for window assembly.

A wall with R19 insulation can have an actual R9, just as a comparison with the real world. The "Pink Panther" does not like it or dispute it, since the test is a universally accepted laboratory testing industry (costly and realistic).

Actual product assemblies depend on all materials and cannot the claimed for other size, shape, weight and configurations, but window people ignore the facts in the interest of peddling and advertising.

Dick
CM,

U-Factor is the entire assembly tested as a complete unit.
U-Factor

U-factor measures how well a product prevents heat from escaping. The rate of heat loss is indicated in terms of the U-factor (U-value) of a window assembly. U-Factor ratings generally fall between 0.20 and 1.20. The insulating value is indicated by the R-value which is the inverse of the U-value. The lower the U-value, the greater a window's resistance to heat flow and the better its insulating value.

You are correct in that there are different performance values for other operators and glass packages, but if it has a sticker on it, it has to be tested and certified at that value.

They don't require a size to be tested as that would require a bunch of tests but because the glass is typically the more high performance aspect of the window compared to many frame materials, the larger size is not usually any more detrimental to the U-Factor.
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Old 06-06-2013, 09:25 PM   #20
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Should I buy triple pane windows?


In Michigan, I would go with triple pane windows and perhaps some higher SHGC windows on the Southern elevation.

After that, CM is 100% correct in that drapes and thermal shades will help out quite a bit and should be used. Beware of condensation issues when you run blinds and shades though.
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Old 06-07-2013, 09:24 AM   #21
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Should I buy triple pane windows?


First, I want to thank everyone for their input & help with my window purchase.

What do you think?

Now to the point, I’ve asked Wallside Windows for their specifications.
The Salesman told me his Manager had him send me the spefications sheet.
I’m thinking all is fine & well, until I went to the NFRC website & see none of the (CPD #) model numbers match!

I’ve asked the Salesman to clarify & direct me to the specifications on the NFRC website, for my proposed installation (double Slider) since the (CPD #) model numbers on the specifications sheet sent are not listed on the NFRC website.
I’m waiting for a reply.

Does anyone know of any reputable, local Michigan replacement window companies?
I’ve called Majic Fiberglass Window, & am not at all pleased with them & their Better Business Bureau ratings.

Thanks Again,
Uni
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Old 06-07-2013, 10:19 AM   #22
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Should I buy triple pane windows?


Sunrise is a nice product made right in MI. I'd contact them and ask them to give you a dealer referral (or 2) in your area. The Restorations line is very good. Softlite, Okna/HiMark, and Polaris are great options as well.
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Old 06-07-2013, 10:38 AM   #23
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Should I buy triple pane windows?


Quote:
Originally Posted by HomeSealed View Post
Sunrise is a nice product made right in MI. I'd contact them and ask them to give you a dealer referral (or 2) in your area. The Restorations line is very good. Softlite, Okna/HiMark, and Polaris are great options as well.
Thanks HomeSealed,
I will.
Uni
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Old 06-07-2013, 11:26 AM   #24
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Should I buy triple pane windows?


You are in Sunrise territory there in Michigan.


Very solid window along with the different brands that HomeSealed mentioned.
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Old 06-12-2013, 02:49 PM   #25
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Should I buy triple pane windows?


Quote:
Originally Posted by HomeSealed View Post
Sunrise is a nice product made right in MI. I'd contact them and ask them to give you a dealer referral (or 2) in your area. The Restorations line is very good. Softlite, Okna/HiMark, and Polaris are great options as well.
Hello Again,

Iím also interested in fiberglass windows because of their specifications on NFRC.org
I had a sales call with Majic Window, & their salesman was abysmal.
He was very insulting & told me the information on NFRC.org is BS, & crap!
He was very upset when I asked about the model # of the Inline Fiberglass window, which would be used for my installation. I showed him on the PC the different Inline Fiberglass Ltd models. He didnít want me to make any comparisons.
He told me he didnít want my business because of my questions (which he couldnít answer), & walked out of the sales call.
Iím waiting to hear from his sales mgr.

Please tell me are there any other retailers of fiberglass windows in southeast Michigan?
Also how are fiberglass windows bonded at the seams?

Thanks Again,
Uni
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Old 06-12-2013, 03:11 PM   #26
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Should I buy triple pane windows?


Fiberglass windows are mechanically fastened. This is a MAJOR detriment as vinyl products go (that is why the vast majority are welded), but not quite as big a deal for fg since it doesnt move quite as much.
I'm sorry to hear about your experience with that dealer. The Inline product is one of the higher performing fg products that you'll find available in the US.
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Old 06-12-2013, 03:46 PM   #27
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Should I buy triple pane windows?


I would look for a Marvin Infinity as well. Should be a dealer somewhere out there by you.
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Old 06-12-2013, 05:52 PM   #28
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Should I buy triple pane windows?


Quote:
Originally Posted by HomeSealed View Post
Fiberglass windows are mechanically fastened. This is a MAJOR detriment as vinyl products go (that is why the vast majority are welded), but not quite as big a deal for fg since it doesnt move quite as much.
I'm sorry to hear about your experience with that dealer. The Inline product is one of the higher performing fg products that you'll find available in the US.
Some of my lower level windows are joined mechanically at the seams.
They were in the house when I purchased it.
How can I tell if they are FG, or even which manufacturer?

Thanks Again,
Uni
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Old 06-12-2013, 08:42 PM   #29
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Should I buy triple pane windows?


Those appear to be of the cheapo vinyl variety. You may be able to find a sticker somewhere in the jambs that has some identifying marks.
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Old 06-13-2013, 08:25 AM   #30
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Should I buy triple pane windows?


Slider + Mechanically fastened sill = problems down the road in most cases.

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