NFRC Window Ratings-What Do They Mean?

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NFRC Window Ratings-What Do They Mean?

Posted on Thu, Aug 25, 2011 @ 09:54 AM

NFRC LABEL The NFRC rating sticker should be on every window you purchase whether it is a replacement window or new construction. This sticker will show you how well a window performs. It evaluates the performance of the window's frame, the glass, and the spacers that keep the glass apart.

National Fenestration Rating Council

U-Factor - The U-factor is resistance to heat flow. It measures the performance of the entire window. The lower the u-factor, the better.

Solar Heat Gain Co-Efficient - The SHGC measures how much infrared light (or heat in the light) gets thru the glass. The lower the number, the better.

Visible Light Transmission - This measures the amount of visible light that comes thru the glass. Here, the higher the %, the more visible light will pass thru the glass.

Read the full article from Exterior Contractors July 2011 issue.

Jay L. Bachman, Managing Partner

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Comments

Good point about every window should have a sticker on it. Homeowners should be very suspicious if their new windows show up and don't have a NFRC rating sticker.

Posted @ Sunday, October 09, 2011 9:52 PM by Replacement Windows Chicago

Another problem we routinely deal with is when a customer is upset about the air pockets around their window, not realizing the problem stems from a poor window frame and not a poor window. The window is only as good as the frame that's supporting it.

Posted @ Friday, October 28, 2011 10:59 AM by Ryan Roofing

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