We include aluminum concrete forms from Western Forms on our list for two reasons: First, they represent a durable, reusable product that is fully recyclable. Second, they have the potential to produce many affordable energy-efficient homes without replacement. Concrete is costly in terms of embodied energy, but if installed and insulated properly, energy saved over its long, low-maintenance life span can make up for the initial energy cost. And the forms, if maintained properly, should remain in service for decades.
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