The Polycrylic is waterproof, I painted the benches in my old house and covered them with 7 layers of Polycrylic. It is good to sand lightly and then apply a new coat once a year for maintenance.

Is Polycrylic good for outdoor use?

Polycrylic is not as durable as polyurethane and is meant to be used only on interior surfaces such as cabinets, furniture, and trim. It shouldn’t be used in exterior applications or on surfaces that are subject to lots of wear, such as floors, or that are exposed to water.

Is Polycrylic a sealer?

It forms a solid seal over any piece of wood and therefore protects your projects from damage that can be caused by temperatures, water, and light. Polycrylic is a good option because you can find clear, satin, and glossy finishes.

Minwax® Pro Series Spar Urethane

This professional, water-based, crystal clear protective finish is specially formulated to create a protective barrier against rain, moisture and sunlight.