Why are teak decks so valued on ships?

Teak wood is easily worked and contains natural oils that make it suitable for use in all types of weather conditions. It is extremely durable, even when not treated with oil or varnish. The wood cut from old teak trees grown slowly in natural forests is more durable and harder than teak from young trees grown in plantations. Teak is also very resistant to termite attacks, not usually a problem on ships. Much of the world's teak is exported by Indonesia and Myanmar.