When selecting wood for an outdoor bench, durability against the elements is paramount. You need a species that naturally resists moisture decay and insect infestation. The top contenders are Western Red Cedar, Teak, and Redwood.
Western Red Cedar is a classic choice. Its natural oils act as preservatives, giving it excellent rot and insect resistance. It's relatively lightweight, easy to work with, and ages to a beautiful silvery-gray if left untreated. It offers a great balance of performance and cost.
Teak is the gold standard for outdoor furniture. Its high natural oil and rubber content make it incredibly resistant to water, rot, and pests. A teak bench can last for decades with minimal care. The primary drawback is its premium price.
Redwood, specifically heartwood, contains tannins and extractives that provide strong natural decay resistance. It's stable and less prone to warping. Like cedar, it weathers to a distinguished gray. Availability can be regional and it's often priced similarly to cedar.
For a budget-friendly option, Pressure-Treated Pine is practical. The chemical treatment process forces preservatives deep into the wood, protecting it from rot and insects. Modern treatments are safer than old formulas. It requires sealing or painting for best appearance and longevity.
Ipe and other tropical hardwoods are exceptionally dense and durable, but they are expensive and can be difficult to source sustainably.
Your best choice depends on budget and desired maintenance. For a beautiful, low-maintenance bench that ages gracefully, choose Cedar or Redwood. For a heirloom-quality piece where cost is secondary, Teak is unmatched. For maximum value and durability on a budget, Pressure-Treated Pine is a reliable workhorse. Whichever you choose, proper construction with drainage and occasional cleaning will significantly extend your bench's life.