Waterlox Universal Tung Oil Sealer (UTOS) – 1 Pint | Base Coat for Wood Finishes

Waterlox Universal Tung Oil Sealer: A durable base coat for wood projects

Waterlox Universal Tung Oil Sealer (UTOS) is a high solids base coat designed to partner with Waterlox topcoats. When used together with H2OLOX, ORIGINAL, MARINE, or URETHANE finishes, UTOS helps your wood surfaces develop a rich, protective foundation that supports long-lasting beauty.

UTOS creates a waterproof barrier and a protective film when paired with the compatible topcoats. It is crafted to be low odor and low VOC, simplifying cleanup and maintenance in busy spaces such as living rooms, kitchens, studios, and workshops.

Why choose UTOS?

• Base coat designed to be used with H2OLOX, ORIGINAL, MARINE, and URETHANE finishes; together they form a durable barrier while enhancing the wood’s natural character.
• Topcoat required for full waterproofing; UTOS by itself is not the final protective layer.
• Roughly 90% of the resin comes from renewable resources; VOCs are compliant across all 50 states.
• Drying times are typically overnight, with longer times in poor ventilation, high humidity, or cool temperatures.
• Versatile for interior and exterior wood surfaces, including floors, windows, doors, cabinetry, furniture, and more. Exterior use may require an added mold/mildewcide according to project needs.

How to use UTOS

• Apply UTOS as a base coat only; follow with a compatible Waterlox topcoat for full protection.
• Ensure surfaces are clean and dry; work in a well-ventilated space and avoid high humidity.
• Allow UTOS to dry overnight before applying the finish coats.
• For exterior projects, note that the product contains no mold or mildewcides; you may add one if needed.

With UTOS, you can build a prepared, even foundation that supports a durable, eye-catching finish. Explore how it can complement your next wood project without overcomplicating the process.