Thursday, April 24, 2014

Windows - Durability and LCC Comments

Posted by Webmaster on 4. February 2003 10:56

Posted By: P. Marc LaFrance from U.S. Department Of Energy

February 4, 2003 10:56 AM

Please enter your comments regarding Durability and Product Life Cycle Costs. Thank you Marc LaFrance


Replied By: P. Marc LaFrance

12 - Feb - 2003 5:27 AM

R&D Manager...

Please see the following URL for the latest report from the Aspen Research project that is co-funded by several key industry partners and the DOE.
http://www.igdurability.umn.edu/download/IG_02_AnnualReport.pdf
Soon, a presentation for the second phase of the project will be posted on the home page.
http://www.igdurability.umn.edu/index.html


Replied By: Richard Voreis

16 - May - 2003 6:04 AM

Energy Star has published...

Energy Star has published that a typical window has an average lifetime of 40 years.

I believe durability testing will determine that vinyl windows cannot meet this statement. On the other hand, it will be determined that aluminum windows can meet and exceed this statement.

There's more to window performance than just U-Factors.


Replied By: Richard Voreis

16 - May - 2003 6:06 AM

reply pt. II...

I have conducted research on the environmental impact of various fenestration materials earlier this year. Based upon the serious concerns that have developed from my initial findings, I will be conducting additional research on the environmental impact of PVC/Vinyl.

I will be glad to share my findings with DOE.


Replied By: P. Marc LaFrance from US Department Of Energy

05 - Aug - 2003 1:14 PM

Update on IG Durability Meeting...

The next meeting will take place in association with the IGMA meeting in Ottawa.

6-9 pm EDT
Friday, August 8, 2003

IGMA Board Room
27 Goulburn Ave.
Ottawa, Ontario


Replied By: Bob Braun from Dow Chemical

10 - Oct - 2003 2:19 PM

R&D Leader...

I reviewed the Energy Star info and the 16 page booklet on energy efficient windows. In the pamphlet, I can find only one small reference to the consumer that air leakage around the installed window is not part of the NFRC rating but no advise on how to make sure this does not happen or any advise on window installation at all. It seems to me that as a consumer, if I had spent that much money and time to research the subject thoroughly in order to make sure I had the best window, but then had a poor installation, I'd be loosing most of my benefit and should really be angry.

Cannot Energy Star and future publication begin to address this important aspect of the window/wall interface?


Replied By: John Wheatley from North American Windows

13 - Nov - 2004 9:55 AM

Longevity of windows...

Marc,
I was amazed to read the deposition of an expert witness speaking on behalf of the Pella Corporation who stated that their alumninum cladding is "a strictly a decorative covering." His statements are a part of the public record. It was his testimony that their roll-formed sash coverings on both window and door stile and rails are NOT intended to keep water out! It is absolutely no surprise to anyone the water+ wood=mold. And today inside the entire building community that word is poison! So, my 30 years experience inside the window and door industry leads me to conclude this relative to window (and door) longevity: it depends on the variables. In my own house, an operable Pella clad casement sash rotted behind the clad after 13 years exposure to an eastern elevation on the ground floor & had to be replaced at an expense of $242.00 for a single glazed sash without labor to install it. In this case, longevity was 13 years. I am afraid this is just the start for my Pella Sunroom which has 8 operable Pella clad casement windows. "Too bad for me," I was told by the responsible service center that when I purchased my Pella windows they only carried a one year warranty! Today Pella generally writes a 20 year insulating glass warranty & 10 years on the product with several exceptions and exclusions. While I have found a window, EAGLE (eaglewindow.com) from Iowa as well, ironically, which writes a lifetime warranty on their aluminum cladding--I used to think Pella was the Cadillac of the industry. Learning otherwise will cost me a small fortune by the time I am done replaceing the rest of my windows.
Finally, I understand Pella is now facing two class action law suits claiming "defective and deficient" design and inherent product failure--rightly so based upon my ownership experience. Wasn't it about 7th grade consumer economics class in which we were taught "let the buyer beware?" Pella will want to blame me, or my carpenters, or the distributor, or the delivery people in handling or perhaps even acts of God (that being, the weather) for their product failure at my home. As part of "the rest of the story" which I have learned, roll-formed aluminum cladding CAN'T last as long as extruded aluminum cladding--in large part because extrusions can be mechanically fastened together while roll-formed pieces are over-lapped or under-lapped and the owner must pray the lapping doesn't move and allow water to penetrate.
You are asking a wonderful question when you bring up durability and life-cycle costs!



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