Volume 12, Issue 46 ~ November 11 - November 17, 2004
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Got an Envionmental Question? Send it to: EARTH TALK, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881. Or submit your question at: www.emagazine.com. Or e-mail us at: earthtalk@emagazine.com.
From the Editors of E/The Environmental Magazine

Build Your Green Home of Mud or Steel
What are the environmental benefits of an all-steel home? What other kinds of green homes are on the market today?

In the past, ecologically sound new homes have been costlier to build and maintain than their traditional counterparts. But recent innovations in green design coupled with smart materials sourcing have allowed builders to create not only efficient but also affordable green homes. Many of these homes are on the cutting edge of building design, making use of steel framing, modular and panelized construction techniques and energy-efficient insulation.

The criteria for what is considered a green building are not set in stone, but most such structures offer good indoor air quality, reduced energy use and resource conservation via the use of recycled, reused or sustainably harvested virgin materials. Furthermore, green buildings are often sited to minimize water use and runoff while taking full advantage of the sun for solar heating and shade for natural cooling. The initial costs of a green home might be more than for a traditional house, but the buyer’s return on investment comes in the form of energy and maintenance cost savings over a lifetime.

A wide range of construction materials passes the test as environmentally friendly, but steel is king in the new generation of affordable green buildings. Besides its strength and resistance to weather and fire, steel is ultimately recyclable; two-thirds of all the steel in use in the U.S. today comes from recycled stock. Additionally, by framing houses with steel instead of wood, green builders save millions of trees every year.

Beyond steel, other materials, such as adobe, straw bales or rammed earth, can make for some of the most energy-efficient and affordable structural elements. Each provides excellent insulation and can save on both materials and transportation costs if available and procured locally. Some designs include walls made by stressed-skin foam panels, rigid foam that is sandwiched between oriented strand boards. More scaled down green homes might use recycled newspaper for insulation in otherwise traditional walls. Also, salvaging materials — such as old windowsills, floorboards or light fixtures
— from existing or teardown structures epitomizes the green motto of Reduce, Reuse, Recycle while also saving money.

Those inspired to build a green home on a limited budget have a wealth of information at their disposal, notably websites devoted to green building practices, techniques and materials. Also, Building Innovation for Homeownership, a publication of the federally funded Partnership for Advancing Technology in Housing, profiles 63 award-winning low-cost housing developments that incorporate materials and techniques on the cutting edge of green building. Meanwhile, the U.S. Environmental Protection Agency offers free access to its on-line Energy Star database of green builders. The EPA site also includes a database of both lenders and utilities that offer special incentives to buyers and builders of energy-efficient homes.

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