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Lofty Thought of the Day

- Category: Science & Technology
R. Norman Matheny / The Christian Science Monitor Polyurethane substitute is made from eco-friendly whey, a byproduct of cheese-making. A file photo of a dairy cow herd, headed for a pasture in Wisconsin. Hardwick, VT. -Andrew Meyer believes that he's found a "whey" to help Vermont's dairy farms by turning a cheesemaking byproduct into an eco-friendly wood finish.
Like other water-based substitutes for traditional (oil-based) polyurethane, Vermont Natural Coatings' (VNC) PolyWhey dries fast and emits no toxic fumes. It releases very low levels of volatile organic compounds (VOCs), about one-quarter the amount released by some polyurethanes. Unlike other waterborne finishes, its hardness makes it a viable option for professional-grade work, experts say.
Building Green, a private publisher that researches green building products and practices for contractors and policymakers, named PolyWhey one of its Top 10 products in 2008.
"I'm not aware of any other clear coating that combines its high level of performance with such low VOC emissions," says Building Green's Alex Wilson. It costs about 2 cents per square foot more than comparable wood finishes...MORE...

