Clean your teak wood with a mild soap or dish detergent and a rag. This removes any debris, such as dust and dirt that has collected on the surface of the wood. Do not use any abrasive items to scrub the wood.
Spray the teak wood with a water hose to remove the soapy water and let the wood dry. The wood should dry for 24 to 48 hours.
Sand the wood with fine grit sand paper. Do not rub the sand paper back and forth; instead, go with the grain for the best outcome. Wipe the dust away with a dry rag.
Paint the teak wood with a paint brush, going with the grain. Going with the grain gives the finished look a smoother appearance. Allow the paint to dry per manufacturer's instructions.
Wipe the wood with a dry rag to clean it before applying a stain.
Apply a semi-transparent stain to the wood. For the best protection, use a wood stain that offers UV protection.