Window and door systems need to perform. Period. Over and over again, respondents to Building Design+Construction’s annual window and door survey overwhelmingly
reported that performance, weather resistance, durability, and quality were key reasons a particular window or door was specified.
Respondents also offered opinions on materials choices (aluminum is tops for windows, wood for doors), glazing options (no clear favorites), daylighting (somewhat
of a concern), and use of BIM in window and door selection (not a concern).
Here’s what a representative sample of your peers told us about why and how they choose the windows and doors they use.
(Download a PDF of the full survey report below)
What Factors Influence Selection?
• Respondents overwhelmingly said the top factors influencing their window/window system choices are energy/thermal performance (87%), durability/reliability (73%), and weather resistance (70%). Aesthetics ranked high as well, with 62% of respondents listing it as an important factor. Tax credits, rebates, and other incentives proved not to be significant purchasing factors.
• Performance is also a significant factor for door/door system choices. The top factors influencing door/door system choices—energy/thermal performance (76%), durability/reliability (75%), and weather resistance (65%)—are the same ones respondents cited as influencing their window decisions. Here, aesthetics ranked slightly higher than it did for windows, with 64% of respondents saying it’s a significant influencer. The majority of respondents (58%) choose the door hardware for most projects.
• When it comes to interior door selection, aesthetics ranked highest, with 72% of respondents saying it was their main influence. Other top factors in selection: performance (67%), initial costs (54%), and acoustical performance (43%).
• When asked about specific concerns with window and door products overall, quality/performance was at the top, with 58% of respondents voting it their gravest concern. Second on their list: leaks or failures—very closely related to quality and performance—with 51% expressing concern. Forty-four percent of respondents listed government requirements as their least important concern with window and door projects.
• Several respondents who provided written feedback noted concern about proper installation and the skill levels of contractors who install windows or doors. However, when ranking concerns, only 28% listed installation problems as a major concern.
• The types of projects our respondents undertook greatly influenced window and door selection. Office buildings (56%) and multifamily housing (46%) were most often cited as the project types respondents undertook during the past couple of years. Retail/entertainment (32%) and government/military (29%) projects also ranked high.
Product Selection: A Mix of Materials
• Aluminum (51%) and wood (40%) are the window framing materials most often specified by respondents. Aluminum-clad wood (35%) and vinyl-clad wood (33%) also ranked high as framing materials.
• Wood doors are a favorite for 72% of respondents, while steel doors are also popular, with 58% of respondents specifying them. Aluminum doors and glass doors also fared well, with 39% of respondents specifying aluminum and 38% specifying glass.
• Standard window and door products are an overwhelming favorite of respondents, with 73% saying they specify standard units compared with only 27% who specify custom units.
• Daylighting does play a role in our respondents’ window selections, with 59% saying it was an important or significant factor, while 41% said daylighting was only an average-rated factor to not being a factor at all.
• Although code requirements are a factor in any product decision, when it comes to daylighting, 68% of respondents said code requirements are an important or very important factor. Only 13% said that codes almost never or never factor into daylighting decisions.
Product Types
• When it came to glazing types used in projects during the last couple of years, no particular type stood out above others. Respondents indicated that each specialty type—fire-rated/safety, impact-resistant, laminated, and tinted—were used equally, and in each case in just a few projects.
• One relatively new glazing type, electrochromic glass, was used extensively by only 1% of respondents; 83% reported no use of the technology. Similarly, only 2% reported extensive use of movable glass wall systems, while 72% reported never having used them. Clearly, new technologies like these take some time to gain adoption by AEC professionals.
• Operable windows were used in a significant number of projects, according to respondents who used them extensively (47%), in at least half their projects (21%), or in a few projects (22%). Only 10% reported no use of operable windows.
• Half the respondents reported using skylights and roof windows in just a few projects; 25% reported never having used them. Only 10% reported using them extensively, and 15% reported using them in an average number of projects.
BIM Usage Not Quite a Factor
• Building information modeling doesn’t currently play a major role in our respondents’ window- and door-related projects, with 64% saying they haven’t used BIM in this capacity. Only 11% report extensive use of BIM in making window and door selections. It might be a few more years before BIM usage cranks up for window and door projects because only 15% of respondents expect to use BIM in this capacity in the next couple years. Almost half (48%) said they don’t expect to use BIM in this capacity at all over the next couple years.
SURVEY METHODOLGY
The survey was emailed to a representative sample of BD+C’s subscriber list. No incentive was offered; 451 qualified returns were obtained. The majority of responses (45%) came from architects and designers, a group that represents half of BD+C’s subscriber base. However, respondents were spread across the professions, and included 22% from contractors and 12% from the engineering fields.
Related Stories
| May 16, 2011
USGBC and AIA unveil report for greening K-12 schools
The U.S. Green Building Council and the American Institute of Architects unveiled "Local Leaders in Sustainability: A Special Report from Sundance," which outlines a five-point national action plan that mayors and local leaders can use as a framework to develop and implement green schools initiatives.
| May 16, 2011
Dassault Systèmes to distribute Gehry Technologies’ digital project
Dassault Systèmes and Gehry Technologies announced that Gehry Technologies’ Digital Project products will be integrated into the Dassault Systèmes’ portfolio and distributed through Dassault Systèmes. Digital Project is a suite of 3D BIM applications created by Gehry Technologies using Dassault Systèmes’ CATIA as a core modeling engine.
| May 11, 2011
DOE releases guide for 50% more energy-efficient office buildings
The U.S. Department of Energy today announced the release of the first in a new series of Advanced Energy Design Guides to aid in the design of highly energy efficient office buildings. The 50% AEDG series will provide a practical approach to commercial buildings designed to achieve 50% energy savings compared to the commercial building energy code used in many areas of the country.
| May 10, 2011
Google hires Ingenhoven Architects to design new Mountain View office
The current Googleplex is straining at the seams and yet the company is preparing its biggest hiring surge ever, so Google decided now’s the time to build its own office space—a first for the Internet giant. The company hired Ingenhoven Architects, a German firm that specializes in sustainable architecture, to create plans for what could be a 600,000-sf office.
| May 10, 2011
Solar installations on multifamily rooftops aid social change
The Los Angeles Business Council's study on the feasibility of installing solar panels on the city’s multifamily buildings shows there's tremendous rooftop capacity, and that a significant portion of that rooftop capacity comes from buildings in economically depressed neighborhoods. Solar installations could therefore be used to create jobs, lower utility costs, and improve conditions for residents in these neighborhood.
| May 10, 2011
Dinner is now served…atop the Lincoln Memorial?
Take a look at the temporary restaurant sitting atop Brussels’ historic Arc de Triomphe-Triomfboog. The Cube, by Electrolux, offers 18 diners a spectacular view of the Parc du Cinquantenair, and is one of two structures traveling across Europe, making stops at famous landmarks in Belgium, Italy, Switzerland, Sweden, and Russia. What do you think about one of these 60-tonne structures being placed on a U.S. memorial?
| May 6, 2011
Ellerbe Becket now operating as AECOM
*/ The architecture, interiors and engineering firm Ellerbe Becket, which joined AECOM in 2009, has fully transitioned to operating as AECOM as of May 2, 2011.
| May 2, 2011
URS acquires Apptis Holdings, a federal IT service provider
SAN FRANCISCO, CA and CHANTILLY, VA– April 28, 2011 – URS Corporation and Apptis Holdings, Inc., a leading provider of information technology and communications services to the federal government, announced that they have signed a definitive agreement under which URS will acquire Apptis.
| May 2, 2011
Perkins+Will merges with Vermeulen Hind Architects, offically launches Perkins+Will Canada
Ottawa and Hamilton-based Vermeulen Hind Architects, one of Canada’s leading healthcare architectural firms, has merged with Perkins+Will. Vermeulen Hind joins Toronto-based Shore Tilbe Perkins+Will and Vancouver-based Busby Perkins+Will to create Perkins+Will Canada. The combination marks the official launch of Perkins+Will Canada, a merge that will establish the firm as among the pre-eminent interdisciplinary design practices in Canada.
