Teak patio furniture is probably the easiest garden furniture to maintain. One of the most appealing aspects of teak is its content of natural oil which is extremely weather and water resistant. The oil also protects teakwood from rot, decay and a variety of wood-boring animals. You will never need to apply a new coat of varnish on teak furniture.
Perhaps the only thing owners are required to do is to occasionally wash the furniture with warm water (with a little soap, if necessary) to remove dirt and grime or human-made stains.
THE SILVER GREY WEATHERED EFFECT
Over time (usually between one and three years), the natural honey-blonde finishing of teak gradually turns to a shade of grey – almost silvery even. Some owners are alarmed by this change. Don’t be. Prolonged exposure to the sun’s UV rays will cause the tannins on the exposed surface to break down. The tannins, which give teak its honey colour, are then slowly leeched off the furniture by rain, moisture and wind. As the layer below, called patina, is exposed to the air for the first time, it oxidizes to a lovely silver grey shade. Once you see the silvery shade began to manifest, make it a point to rotate your furniture around to ensure the oxidization occurs evenly.
BE CAUTIOUS WITH TEAK OIL
Teak oil is heavily marketed on many online marketplaces as a solution to treat and protect teak furniture. However, there is currently no existing technology to synthesise teak oil from teakwood. Instead, commercial teak oils are made using a combination which includes linseed oil, tung oil, varnish, thinners and other proprietary materials.
While commercial teak oil will not seep into the wood, it will replace the natural teak oil on the surface of the furniture. This will affect the greying process mentioned above, and should only be used on indoor teak furniture.