When it comes to finishing a teak outdoor bench, the most popular and recommended choice today is a high-quality, penetrating teak sealer or a marine-grade spar urethane. This shift marks a move away from traditional teak oil, which many experts now advise against for permanent outdoor furniture.
The reason is simple: modern sealants provide superior, long-lasting protection. Teak is naturally dense and oily, making it incredibly durable. A clear sealer works by shielding the wood from within, repelling water and blocking UV rays that cause the iconic silvery-gray patina. This allows you to maintain the bench's warm honey-brown color for years with minimal maintenance, typically requiring just a light cleaning and reapplication every 1-2 years.
While the classic, low-maintenance look of naturally weathered gray teak remains eternally popular, a clear sealer is the go-to for those who love teak's original golden hue. The old standby of regular teak oiling has fallen out of favor because it requires frequent reapplication, can promote mildew in humid climates, and doesn't effectively prevent graying.
Ultimately, the "most popular finish" is the one that aligns with your desired look and upkeep level. For preserved color and modern ease, choose a sealer. For timeless, zero-effort elegance, let nature take its course.