How to Waterproof Teak

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Things You'll Need

  • Clear polyurethane wood sealant

  • Paintbrush

  • Clean cotton towel


If you are protecting aged teak that has faded to gray and want to revitalize the wood's color, sand the surface of the teak lightly with sandpaper and then use a natural teak stain with polyurethane sealer on top of the stain.


Avoid applying polyurethane sealer indoors if possible. Use only outdoors or in a well-ventilated area.

Teak must be cared for to prevent discoloration and water damage.

Outdoor furniture or flooring constructed of teak requires periodic care and maintenance to prevent the wood from absorbing water and to allow it to retain its dark, rich luster. Teak left untreated outdoors will eventually fade to a light gray shade and will crack over time even though it is naturally water-resistant.


Step 1

Wipe off the wood with the clean rag to ensure that its surface is completely clean and free of dirt or debris.

Step 2

Paint the wood with the polyurethane sealer, using long, smooth brushstrokes. Concentrate on coating only one section of wood at a time to prevent the sealer from drying before you have a chance to wipe it off. Allowing the polyurethane sealer to dry will leave a heavy coat of glossy material on the wood.

Step 3

Wipe the excess sealer off of the wood when you have coated one section. This prevents excessive buildup of polyurethane on the surface of the wood, while still allowing sealant to protect the teak by remaining in the pores. Only one coat of polyurethane is necessary.


Don Kress

Don Kress began writing professionally in 2006, specializing in automotive technology for various websites. An Automotive Service Excellence (ASE) certified technician since 2003, he has worked as a painter and currently owns his own automotive service business in Georgia. Kress attended the University of Akron, Ohio, earning an associate degree in business management in 2000.