When selecting wood for an outdoor bench, longevity is a primary concern. Both teak and cedar are excellent choices, but they offer distinct advantages in terms of durability and lifespan.
Teak, particularly high-grade Burmese or Indonesian teak, is the undisputed champion for longevity. Its natural oils and tight grain make it incredibly resistant to moisture, rot, insects, and cracking. A teak bench can easily last 50 to 75 years with minimal care, gracefully aging to a silvery-gray patina without the need for sealants. Its density allows it to withstand heavy use and harsh weather conditions with remarkable resilience.
Cedar, specifically Western Red Cedar, is also a durable softwood with natural preservatives (thujaplicins) that deter decay and insects. It is highly resistant to warping and splitting. However, its longevity is generally less than teak. A well-maintained cedar bench typically lasts 15 to 20 years, though this can extend with diligent annual sealing or staining. Without treatment, cedar will weather to a gray color and may become more susceptible to wear over time.
The key difference lies in maintenance and inherent density. Teak's longevity is largely built-in and requires little intervention. Cedar's lifespan is excellent for its price point but is more dependent on protective finishes to maximize its service life against the elements. For a "set it and forget it" bench that endures for generations, teak is superior. For a beautiful, cost-effective option where periodic maintenance is acceptable, cedar is an outstanding choice that provides decades of reliable service. Your decision ultimately balances initial investment against long-term maintenance commitment for your outdoor space.