Fence Me In: Sustainable Fencing Options
(Page 2 of 2)
May/June 2009
By Lori Tobias
Different woods require different treatments—or none at all, depending on who you ask. Left untreated, the fence may fade, splinter, warp and rot. David Johnston, president of green building consultancy What’s Working in Boulder, Colorado, favors a penetrating stain, particularly for soft woods such as Douglas fir or pine.
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“You don’t want a low-VOC, water-based finish because water-based finishes tend not to penetrate wood, so they will wear off and need retreatment,” Johnston says. “Treat the wood with a solvent if you want it to be durable for 10 to 20 years. Outside, solvents are not as big a concern. They outgas relatively quickly.”
Another school of thought eschews chemical treatment. “Many people don’t protect fences,” Renner says. To keep the wood fresh, he recommends using linseed or tung oil. “They can be sprayed on with a garden hose. Keep it in your garden shed, and every two to three years, as the fence dries out, just walk along and spray.”
Recycled plastic
It’s strong, durable and maintenance-free, and it keeps a lot of plastic out of the landfill. But buyer beware, Johnston says. “Some of it is recycled, some of it is not. It’s very hard to find out if it is recycled or virgin.”
Because few companies manufacture recycled plastic fencing, it can be pricey. Also, some don’t like its appearance. Plastic fades, and it could shrink or swell if not installed properly. “I would use screws over nails and go with the manufacturers’ recommendations,” Renner says.
• DON’T assume recycled plastic fencing is a fail-safe green choice. Some brands contain a mix of virgin and recycled plastic, and it’s tough to figure out whether a product truly contains 100 percent recycled plastic.
• DO consider a less-complicated fencing option: plants. Simple hedges may be all you need if you’re looking for privacy; to keep animals out, try trained blackberry or raspberry bushes.
Resources
Cali Bamboo
(888) 788-2254
bamboo fencing
Fiberon
(800) 573-8841
recycled composite fencing
Heartland BioComposites
(866) 997-7637
recycled composite fencing
Trex
(800) 289-8739
recycled composite fencing
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