Teak wood resists weathering over the years because it produces natural oils that help it to withstand the elements. Resins produced by it naturally repel the insects like termites that feed on wood and resist the moisture. This prolongs the life of furniture made from teak, and you can even use teak chairs over the years without any finish. You can varnish, seal, stain or paint them according to your aesthetic preferences but doing so is not necessary. Teak chairs, in its natural form, will last over number of years without getting weak or rot. If you love the natural appearance of the furniture then teak could be a great choice. Another advantage of choosing stable and strong teak chairs is that they are quite easy to maintain.