Energy Environment  
What’s Used and Where: Taking Stock  
of the Glazing in Commercial Buildings  
Percentage of Glass Used by Building Type  
he glass and glazing industry  
recognizes there is a big gap in  
the commercial building stock  
between buildings that still  
utilize single-glazed windows and  
those that feature glazing with per-  
formance-improving attributes. So  
where is that glass?  
The U.S. Department of Energy’s  
Office of Energy Efficiency and Re-  
newable Energy (EERE) has released  
the results of its 2012 Commercial  
Buildings Energy Consumption Sur-  
vey. Results offer specific data on the  
commercial building stock in the U.S.,  
which totaled more than 5.5 million  
buildings at the time.  
One data section highlights win-  
dows, breaking down the number of  
commercial buildings in each subsec-  
tor that include certain glazing fea-  
tures. These include “multipaned  
windows,” “tinted window glass” and  
Multipaned Windows  
Tinted Window Glass  
Reflective Glass  
reflective window glass.”  
USGlass crunched the numbers for  
a look at the percentage of buildings  
in each subsector that use each type  
of glazing. The data give an indication  
of which sectors use these types of  
glazing the most, and which don’t. The  
chart on the left provides a closer look  
at where glass is used.  
Please note: total number of  
buildings per sector (in thousands):  
all buildings – 5,557; office 1,012;  
warehouse/storage – 796; service –  
19; mercantile – 602; religious wor-  
ship – 412; education – 389; public  
assembly – 352; food service – 380;  
food sales – 177; lodging – 158; in-  
patient healthcare – 10; out-patient  
healthcare – 147; public order/safety  
– 84.  
Multipaned Windows  
Tinted Window Glass  
Reflective Glass  
Data: U.S. Energy Information EERE 2012 Commercial Buildings Energy Consumption Survey  
The healthcare sector leads each category in energy efficient glazing usage.  
Nick St. Denis  
USGlass, Metal & Glazing | April 2016  
Solaria Takes Part  
in Federal Study  
Solaria Corp., a provider of solar  
module technologies, was selected as a  
participant in the United States General  
Services Administration (GSA) Green  
Proving Ground (GPG) program.  
NFRC Extends Product  
Certification Cycle  
he National Fenestration Rating Council’s (NFRC) board of directors has  
extended the NFRC fenestration product certification cycle from four  
years to five years. The change took effect March 1, 2016.  
The program selected Solaria after  
extensive testing of its building inte-  
grated photovoltaic (BIPV) solutions,  
funded by the Department of Energy,at  
Lawrence Berkeley National Labora-  
tory’s (LBNL) FlexLab. The system un-  
derwent holistic testing for energy  
generation, glass performance, tenant  
comfort and its design-build process.  
The GSA is moving forward with a  
commercial pilot installation of the tech-  
nology in 2016. A federal building in  
Kansas City, Mo., was chosen for the  
pilot. While demonstrating its BIPV  
technology in an occupied building,So-  
laria and the GSA, with LBNL, will col-  
lect energy generation, thermal  
performance, daylighting, glare and oc-  
cupant comfort data in comparison with  
non-BIPV windows in the same build-  
ing. It also includes evaluation of the de-  
sign-build process and economics.  
The five-year certification cycle is not retroactive. It applies only to products  
certified or re-certified on or after March 1, 2016, according to the NFRC. As-  
sociation officials say this “will avoid creating unforeseen loopholes that may ...  
undermine the integrity of our rating and certification program”; it will “prevent  
possible confusion among consumers, code officials and design-build profes-  
sionals”; and “is the most fair and equitable decision for all stakeholders.”  
In other news, NFRC released its newest version of the Window7/Therm7 Sim-  
ulation Manual. The document provides commercial glass fabricators and resi-  
dential window manufacturers a procedure for generating energy performance  
for environmentally controlled dynamic glazing, such as thermochromic glass.  
As of April 2014,  
more than 4.3  
million people  
lived and worked in  
LEED-certified buildings.  
Report: U.S. Green  
Building Market Should  
See Strong GrowthRecession,  
During the Great  
As of October 2014, more than  
3.3 billion square feet  
of building space was LEED certified.  
the green building industry was down  
by close to 40 percent in 2008 com-  
(Source: USGBC)  
pared with 2009, according to a recent search company in Wellesley, Mass.  
for green building materials has seen  
report. This, however, has changed. Structural materials  
will rapid growth in recent years. As of Oc-  
The U.S. market for green building increase from nearly $28.7 billion in tober 2014,more than 3.3 billion square  
materials reached almost $43.8 billion 2014 to $43.8 billion by 2019, a feet of building space was Leadership  
in 2014, and it’s expected to grow at a growth rate of 8.8 percent. Interior in Energy and Environmental Design  
compound annual growth rate of materials will climb from nearly $9.5 (LEED) certified.As of April 2014,more  
report by BCC Research, a market re-  
percent to almost $69 billion into billion in 2014 to $14.7 billion by than 4.3 million people live and work in  
LEED-certified buildings, according to  
According to the report, the market the U.S. Green Building Council. s  
019. The findings come from a new 2019, a growth rate of 9.2 percent.  
April 2016 | USGlass, Metal & Glazing