Difference Between Solarban70XL(2) and Solarban70XL(3)

6 years ago

What is the difference between Solarban70XL(2) and Solarban70XL(3)? Are both of these options available with PGT non-insulated impact windows? Is the XL(3) only relevant when dealing with insulated windows?

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millworkman

6 years ago

last modified: 6 years ago

(2) refers to the SB70 low e being applied to surface #2. (3) refers to the SB70 low e being applied to surface #3. Both are really only intended to be used in an insulated glass unit as the low coating is a soft coat and is not designed to be left exposed.

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Comments (11)

stair_climber
Original Author
6 years ago
Thank you for that explanation. Is a hard coat possible on an impact window that is not insulated? Do you know if PGT or CGI make a hard coat impact window that is not insulated? I'm shooting for Vinyl, Gray tint, LowE, not insulated.
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millworkman
6 years ago
Nope I do not. And why would you not want an IG window?
talk2gene
6 years ago
Because I dont want a seal leak which leads to condensation inside the window. Plus IG has less benefit in a hot climate. But if I can only get low E with IG then I guess I'll have to go with IG. If PGT's warranty covered parts, labor and delivery to replace a seal leak then I might think differently.
PRO
Windows on Washington Ltd
6 years ago
Insulated glass is quite good these days and if you use a quality window and they use a quality glass, you shouldn't have an issue. I can't see a rationale for avoiding the use of insulated glass because it is more complete. That would be somewhat analogous with saying you don't want ABS because the module can fail so you prefer drum brakes.
talk2gene
6 years ago
Well. I'm not sure I agree with that comparision. ABS provides a safety aspect (when working) that drum brakes don't provide. IG does not have a safety aspect.

Question:

Are all current lowE impact windows made with IG? Is IG required in order to have a protected glass surface to place a lowE soft coat?

OR

Can the soft coat be placed between the PVB and internal surface of impact glass in which case IG is not requirement for lowE?

Thank you for helping me earn my GED in window technology.
charpell
6 years ago
It is possible to put a low e coating against an inter layer, but you negate the energy gains. It is occasionally done to achieve a particular colour. You would be much better serviced by an IG with one side as a laminate layer. This allows you the laminate you need for impact as well as having the low e coating protected in the airspace. Take a look here for more info: http://www.viracon.com/page/laminated-insulating
PRO
Windows on Washington Ltd
6 years ago
The analogy wasn't about the "safety" aspect of the comparison. It was about the "technology vs. failure" comparison. A newer car has 10X the electronics and complexity today than in the 1990's. Just because I acknowledge that more complexity = more possible failures, does not mean that I would trade all the creature comforts and benefits of that additional complexity.
stair_climber
Original Author
6 years ago
Thank you all for your valuable input. If my sales guy cannot point me to a finished project to view which has the features I'm looking for then as an alternative I'll see if I can purchase just one window for installation on my house. If I like it then I'll order the same thing for the rest of my windows.
millworkman
6 years ago
last modified: 6 years ago
I think you are over thinking the seal failure rate. We see very few these days and we install 100k sq ft a year plus including monster oversize commercially and in residential.
stair_climber
Original Author
6 years ago
Are you in a hot climate like south Florida? Most replies I get agree with your comment. A few say otherwise. I am not worried about the windows failing in the first 10 years. With today's technology, I figure PGT or CGI can prevent condensation issues for that long. I am concerned about year 11+ when I'm an old man and don't want to deal with messed up windows. On the other hand, I might get lucky and never have a leak/condensation. If I get a leak at least PGT will cover the cost of the window but not installation or delivery.

My sales rep. tells me PGT vinyl lowE impact windows only come laminated-insulated but their aluminum frame can be ordered lowE laminated without IG. Is there a technical reason for this difference or do you think its based more on the market demand? Or do you think the local window company only wants to order PGT vinyl with IG?

I believe I read somewhere the leak rate of an insulated window is about 1% of the gas per year and that condensation become visible until 25% of the gas has been replaced by moist air getting in the chamber. Have you heard this? That might be why the PGT warranty is good for 25 years. If the IG lasted that long with no condensation I would be thrilled.....I would be 89 years old and would have other issues besides foggy windows...if I live that long.

So you might say, why not just go with aluminum and be done with it? My answer: I don't want the maintenance headache of waxing my aluminum frames periodically to keep the paint from chalking. South Florida sun is a killer on paint.

Am I over thinking this? Maybe. But I want to make a decision I can live with before I drop $12 grand on windows.

Difference Between Solarban70XL(2) and Solarban70XL(3)

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Difference Between Solarban70XL(2) and Solarban70XL(3)

Comments (11)

stair_climberOriginal Author

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stair_climberOriginal Author

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stair_climber
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