What is the life span of marine plywood?

Marine plywood has an expected lifespan of approximately 10-30 years, depending on the quality of the plywood, installation practices, maintenance, and exposure to water and sunlight. High-quality plywood, sealed properly, installed correctly, and properly maintained in ideal environmental conditions can last beyond 30 years. However, marine plywood exposed to moisture and UV radiation without treatment and maintenance will likely have a considerably shorter lifespan. Regular care, inspections, and re-treating can substantially extend the life expectancy of marine plywood.