Teak is renowned because of its durability and resistance to moisture. The wood is as durable as most varieties of oak, and in the exact same time is really thick with organic oils that it is almost immune to moisture and rust under ordinary conditions. Teak-lumber keels and other parts are found on centuries-old shipwrecks, long after the rest of the wood construction of the vessel has rotted away or been consumed by worms! Even so, teak still requires some care and treatment to maintain the wood, so it continues to look presentable.
Spray the teak using an oil soap wood cleaner and wash it down with a clean rag.
Allow the teak to dry overnight.
Sand the surface of the teak lightly and evenly, with a hand sanding block, a handheld rotary instrument, a hand orbital sander or a oscillating instrument as appropriate. Use a fine-grit sandpaper, for example 240-grit.
Wipe the teak down with a tack cloth.
Apply a coat of teak oil into the surface of the teak using a paint brush, with long, even strokes. Allow this to soak in overnight, then apply another coat.