This is a common question for owners of beautiful teak urban outdoor furniture. The answer depends entirely on the specific product you have purchased.
Untreated, high-quality teak wood contains natural oils and rubber that make it highly resistant to rot, decay, and insects. When left outdoors and exposed to the elements—rain, sun, and wind—this untreated teak will gradually weather from its initial golden-brown hue to a distinctive silvery-grey patina. This process is a natural and even transformation, and many people appreciate this elegant, weathered look as part of teak's charm. It does not signify damage or a loss of the wood's structural integrity.
However, a significant portion of teak furniture sold today is pre-treated. Manufacturers may apply a protective oil, sealant, or stain to help preserve the wood's original warm color. If your furniture is labeled as "treated," "sealed," or "color-locked," it is designed to resist greying for a period, usually one to two seasons, depending on climate and use. To maintain this color, you will need to regularly clean and reapply the recommended treatment product as per the manufacturer's instructions.
To determine which type you have, check the care instructions from the retailer or manufacturer. If no information is available, you can perform a simple water test: sprinkle a few drops of water on an inconspicuous spot. If the water beads up, it is likely treated with a sealant. If it soaks in quickly, the wood is probably untreated and will weather to grey.
In summary, untreated teak will weather to a silvery grey, while treated teak will retain its brown color longer with proper maintenance. Both options are valid, and the choice is a matter of personal aesthetic preference.