[MassHistPres] Window research

[Dennis De Witt]

One study/report on the California site that was new to me and looked  
interesting was the U of Ill study but a quick review (it is very long  
and detailed) seems to suggest at least two major faults.  a) the  
storms are not studied in conjunction with tightened original windows  
and, much more important, b) it absurdly assumes a 50 year life cycle  
with zero IG failure for both the Marvin replacement and the  
retrofitted original window, despite acknowledging that anecdotal  
information on failures is at odds with such an assumption and with  
the industry's typical 20 year guarantee.  (If it's absurd for the  
Marvin, it's even more so for the retrofit which won't have been  
installed under the same tightly controlled factory conditions.)

Dennis De Witt


On Sep 21, 2009, at 11:23 AM, Weiss, Lorraine (PEB) wrote:

> You  may have already seen this resource--I'm sorry but I can't  
> remember if this has already been publicized on this listserve.   
> Below is a message from the Trust's Forum listserve that mentions a  
> good collection of resources (the original writer's name is included).
> ----------------------------------------------
> For those looking for cogent articles and research on the efficiency  
> of rehabilitated historic windows, we have collected several  
> research articles and studies of rehabbed window performance on the  
> California Sustainability web page at the link below.  We hope to  
> add the National Trust's Berkeley window study when it is  
> completed.   http://www.ohp.parks.ca.gov/?page_id=25935
>
> Mark C. Huck, AIA, LEED AP
> Restoration Architect, Office of Historic Preservation
> 1416 9th Street, Room 1442, Sacramento CA 95814
> (916) 653-9107 Office; (916) 653-9824 Fax
> -----------------------------------------------------
>
> regards,
> Lorraine
>
> Lorraine E. Weiss
> Historic Preservation Planner
> __________________________________________________________
> Division for Historic Preservation  ◙  www.nysparks.state.ny.us
> NYS Office of Parks, Recreation and Historic Preservation
> lorraine.weiss at oprhp.state.ny.us - 518-237-8643, x 3122
>
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