Left alone to age, the natural color of teak furnishings will weather to a soft, silver grey. This process will take approximately nine months, depending on the degree of sunlight and rain exposure. Imperfections, which are inherent properties of the wood, will show over time, enhancing the beauty of the furniture. In humid or wet climates, or after rains, the wood may naturally expand and contract, causing the grain to rise. This is to be expected with exposure to the elements and will stabilize after the initial weathering occurs.
To maintain wood furnishings, use a soft bristled utility brush and stroke lightly in the direction of the grain to remove surface dust. For more stubborn dirt, the wood may be washed periodically with a mild solution of four parts laundry detergent or dishwashing soap to one part bleach in water, then rinsed thoroughly and allowed to dry completely. Commercial teak cleaner may be used to maintain or restore the natural color and luster of teak wood, regardless of how long the piece has been outside. Oiling outdoor teak may cause mildew or irregular coloring. Depending on climate exposure, furnishings may need to be treated one or more times a year as desired.