By Matt Baker
As its constituency has begun to feel the mounting pressure to go green from tenants, investors and government regulation over the years, the Building Owners and Managers Association (BOMA) has expanded its role as advocate to include more green leadership. Initially concentrating on the low-hanging fruit of sustainability, BOMA has tried to show its members not only the methods for updating their properties in a responsible way, but also varied ways to finance it.
By Dave Hampton
Late on a Thursday night in June 2005, the local fledgling environmental advocacy group, Urban Habitat Chicago (UHC), got a call about a home that was slated for demolition the following Monday morning. The caller heard we were those enthusiastic young folks who tried to reuse building materials to make new things, and thought we might be able to salvage some things from the house.
By Lindsey Kirleis and Valerie Miller, The Dobbins Group
The indoor environment quality section of LEED contains some provisions that offer just as many perks for the end user as they do sustainability for the environment. Whether you are a building manager trying to retain tenants or an office manager trying to retain employees, things like air quality, thermal comfort, daylighting and optimal views may seem more luxury than green. But in fact they are both, with the benefit to your budget not only in energy savings, but in reduced turnover costs.
As the economy continues to struggle—with the real estate industry taking the brunt of the fallout—there has been much speculation about what impact the credit crisis will have on the sustainable building movement. Index Publishing’s 2009 Building Green Chicago Conference on April 7th will take a detailed look at both public and private efforts to retrofit the built inventory for sustainability.
There are currently three major impediments to the growth of green building in the American residential market: cash, conservatism and cosmetics. Even with government subsidization, the extra upfront cost associated with the installation of most green products will only ease with time, as higher production lowers costs. And the conservatism of both consumers and construction professionals reluctant to install unproven or unfamiliar technology has stymied adoption of sustainable principles. This, too, time will erode.
While we wait for those barriers to crumble, manufacturers can work on the third major impediment: the sheer ugliness of some green products. Many consumers have been won over by the green cause, but are still reluctant to install products that they feel blemish their property.
The most prominent battlefield in the struggle between staid and sustainable is the humble, single-residency roof. Not only are they the front line in seasonal temperature loss, roofs are the most conspicuous portion of any home. Some are the proud badge of their treehugging homeowner while others are meant to blend into the neighborhood as much as possible. Manufacturers are already addressing both philosophies.
For those cautiously accepting the green building movement, the best roof option is one that looks like their neighbor’s. In the U.S., this means asphalt shingles, ubiquitous due to their relatively low cost and ease of maintenance. But asphalt shingles are petroleum-based, outgas VOCs, have poor insulation and last a paltry 20 years on average. Slate roofs, by comparison, are much more expensive but can last hundreds of years with proper maintenance, if not indefinitely.
The middle ground may be composite roof tiles. The good ones are indistinguishable from slate at half the cost. While they can’t claim to last centuries, some composites, like Michigan’s Inspire Roofings have a 50 year warranty. Inspire compresses natural stone and resin to form tiles resembling slate, while other companies, such as Minneapolis-based Trimline, use recycled materials in their molds.
Modern solar panels have been around for decades. While their energy efficiency is still rather modest, even the oldest ones earn back their investment within a few years. So why hasn’t every homeowner with the capital installed a few on his or her house? Part of the reason may be that most homeowners don’t want their house to appear as if it is under attack by giant, metallic butterflies. But solar panels are no longer the winged monstrosities of the ’60′s and ’70′s. Over the decades they’ve achieved smaller and smaller profiles and with some technologies, they are now virtually invisible.
California-based SunPower Corporation manufactures a “SunTile” that, from a distance, is indistinguishable from the traditional tar and asphalt roof shingle. This system can be mixed in with asphalt shingles or across the entire roof. But until demand increases production, SunPower only offers the tiles for use on planned developments of more than 25 homes.
The PAC Solar Series by Peterson Aluminum of Elk Grove Village offers standing seam roofs embedded with solar-collecting film. The lightweight solar laminate is fused to standard aluminum panels in the factory, alleviating the need for mechanical fasteners that may compromise the roof’s integrity. The laminate expands and contracts with the roof due to heat change and promises competitive efficiencies. But the best part is that the roof is virtually indistinguishable from any other standing seam installation.
Capping off the sustainable roofing spectrum is the highly visible vegetative roof. These roofs mitigate the urban heat island effect, retain stormwater runoff and improve insulation. They are currently rare in residential applications, but even those commercial and institutional installations suffer from the unsightly design of many modular systems.
Most vegetative roofs are comprised of plastic trays filled with a growing medium, seeded, and installed like tile on the roof. The growing medium typically comes to the top of the tray and the plants are at best young sprouts. After the installation of these roofs, the initial result is a checkerboard of dirt, spotted with green. LiveRoof LLC offers a “prevegetated” system that leaves an attractive, lush green roof upon install.
Two aspects give the LiveRoof system an aesthetic edge. Firstly, the growing medium, a mostly inorganic mesh that resists compression, is built up higher than the trays through the use of plastic soil elevators which are removed upon installation. The soil in each tray serves as ballast to its neighbors, creating a seamless bed that completely hides the recycled plastic trays. Secondly, LiveRoof grows the plants to full maturity, ensuring that the customer has a lush roof not several weeks or even months later, but immediately.
The U.S. lags behind Europe in adoption of green building practices, and getting those practices to take further root will require even more time. But perhaps with a focus on aesthetics, we can trim the time scale down from the glacial to merely the epic.
By Iain M. Bradbury
The Chicago Department of Environment, in collaboration with ICLEI-Local Governments for Sustainability, has launched the Chicago Green Office Challenge to help contribute towards the ambitious goals of the Chicago Climate Action Plan.
By: Matt Baker
In 2006 alone, demolition permits were issued for 4,500 single-family homes and duplexes in Chicago. If deconstructed instead, most of these materials could be reused and diverted from the landfill.
By Vuk Vujovic, Associate AIA, LEED AP
and Steven Kismohr, AIA, LEED AP
The world is in peril. Scientists find the Earth is in danger of harmful radiation. Its agricultural production is depleting, followed by a declining economy. The planet’s biodiversity is waning rapidly, while countries and multinational companies, fearing economic and social upheaval, are slow to make changes to their business-as-usual approach. Does this sound like a familiar scenario? In the 1970′s, this was about the ozone depletion. Today, we are dealing with global climate change.
By Matt Baker
It is the hope of every forward-thinking developer that sometime in the near future, the prices for sustainable building systems and materials will be competitive with their conventional counterparts. In the meantime, those that do take the green leap are content to know that the extra initial cost of installing green technologies will be made up by the eventual energy savings. Every property is an investment, but this delayed payoff adds a deeper sense of investiture to green buildings. Read more
A Different Approach
Flashpoint Academy of Media Arts and Sciences is not your typical college; for proof, you need only walk the halls. The common areas, classrooms and hallways are all lined with pop art. The president’s office sports a Segway and a pair of skateboards are mounted on one wall. Read more