Wood Privacy Fence: Material and Treatment Selection
Pressure-treated pine is the standard for privacy fence framing (posts and rails). AC2 or ACQ treatment at UC4B ground contact rating is required for posts. Treatment levels matter — fence posts rated for above-ground use will rot at the soil contact point within 5-7 years. We specify ground-contact treatment for posts even if the boards above are a lighter treatment level.
Western red cedar is a popular natural option for the visible boards — it has natural rot resistance and holds stain well. Cedar costs more than PT pine but produces a higher-quality finished appearance. For a standard wood privacy fence, we use PT posts and rails with cedar boards, or all-PT construction depending on budget and preference.