Field Liners are a multi-layer laminate material specifically designed to act as a physical barrier between the pole and the soil. These impermeable, non-biodegradable liners help prevent preservative migration and can significantly extend pole life. Although decades of history show that treated wood poles do not present an unacceptable risk to the environment, there are increasing public and regulator concerns about their use. Field Liners provide "barrier protection," separating the pole and its preservatives from the surrounding soil. Barrier protection is designed to prevent the invasion of wood-destroying fungi and termites which typically occurs as the preservative leaches from the wood, leaving it vulnerable to attack.
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