Systems Thinking, Green Roofs and Shelter

(This originally appeared in the June '10 edition of Merchant Magazine and Building Products Digest.)

Ultimately, the ways in which homes are designed and built influence the kinds of products and solutions that make their way into the “shelter supply chain.” The green building movement has blossomed over the last ten years, and the thinking at its core has, too. References to “systems thinking” occur more frequently in conversations concerning all aspects of building science and practice. Buckminster Fuller would be happy. But it’s early days and there is much more progress to be made. The carbon footprint of the building industry is still 2 or 3 times above where it will need to be in order to meet whatever carbon reduction target eventually becomes national policy.

The next waves of innovation are pushing forward more holistic solutions, creating new opportunities for the long term. Savvy dealers and distributors could do well to begin making moves in 2011 into green roofs and modular shelters.

A green roof is exactly what it sounds like – plants growing on the roof. The idea is old, but current approaches are based on the latest systems thinking. A good green roof system takes in the entire building ecology and watershed. Storm runoff is managed, perhaps rainwater is harvested and reused within the building. The plants effectively filter rainwater, provide habitat, and maybe even food for inhabitants. The building’s energy requirements for heating and cooling are reduced, as are heat island effects. Organic wastes are composted, loops are closed. The overall CO2 footprint is reduced. A green roof provides many services for the building, its occupants, and its neighbors, what a permaculture practitioner would call “stacking functions.”

The number of green roof installations is growing and there could soon be tax credits to keep it growing. Savvy dealers would do well to start learning about green roofs, visit local projects, and scout products. New product innovations are coming to market that are contributing to better systems with greener materials, built faster with easier maintenance, etc. Consider the whole system and how you might innovate within your own organization to grow this aspect of your business next year. Learn more at Green Roofs for Healthy Cities, (www.greenroofs.org,) an industry association. Most importantly, build relationships with local green roof designers and builders.

The other wave of opportunity is with modular shelters, a perfect example of holistic design that contributes to sustainability and self-reliance. This may not seem obvious, but at bottom, we are really in the business of providing shelter. Rather, the shelter is the continuing service that customers are getting from their building system, the components of which are sourced from various places and assembled by various workers. Why not provide shelter more holistically?

There has been growing interest in green prefabs and modular building for use on homesteads, back yards, and even roofs. New designs incorporate the greenest materials, are solar powered, collect rainwater and even come with a green roof. (For an example, see Tensen Eco Buildings, here www.tensenbuildings.co.uk.) It’s not hard to see the appeal. These products are much less expensive and more feasible than buying a bigger house or financing a room addition. Building permits may not even be necessary. As more people seek to become self-sufficient, growing their food, and simplifying their lives, these cool little shelters are even becoming preferred ways to live.

A hundred years ago, this supply chain sold goods to people with sod roofs and even sold homes. Thinking of your own dealer or distribution business as a member of the “shelter supply chain” will help position it for the inevitable low-carbon future to come.