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Abstract
For maximum protection against wood decay and termites, use posts that have an in-depth preservative treatment, preferably a pressure treatment for below ground use. When selecting posts of naturally decay-resistant woods, choose posts with mostly heartwood. Horizontal rails require more protection from decay than do vertical boards. In regions of high and moderate decay hazard, build rails with naturally decay-resistant wood or with pressure-treated wood . Boards, pickets and other face parts should be of decay-resistant wood (either natural or treated) in areas where high decay is likely. Elsewhere, use materials of your choice and, where permissible, treat all joints with a water-repellent preservative. Use aluminum or stainless steel nails when a water-repellent or stain finish will be used. If a finish is desired, select one which contains both a water repellent and a wood preservative. Penetrating, pigmented stains are preferred over paints. Keep boards off the ground. Where underground termites are a hazard, donat bury wood around your house or fence, and be sure to consult a professional pest-control specialist if you need a soil treatment.
Citation
De Groot, R. C.; Feist, W. C.; Eslyn, W. E.; Gjovik, L. R. Protecting wood fences for yard and garden. ([Publication] / (University of Wisconsin - Extension) ; no. A3052):5 p.