To fix a leaking wooden bathtub, first inspect the joints, tiles, and waterproofing sealant. Remove loose or damaged parts and apply a high-quality waterproof sealant or epoxy to gaps. Reinforce weak areas with wood glue and sand smoothly. For persistent leaks, consider replacing worn-out drain components or damaged tiles.

Wooden bathtubs are prone to leaks due to rot, warping, or worn-out sealants, which allow water to seep through cracks or joints. A 2021 study by the National Association of Home Builders found that 60% of bathtub leaks in older homes stem from damaged waterproofing layers. Applying a waterproof sealant can prevent up to 80% of leaks by creating a barrier against moisture. Epoxy-based fillers are effective for structural repairs, as they bond securely to wood and resist shrinkage. Regular maintenance, such as inspecting and resealing the tub every 1-2 years, can extend its lifespan by 5-10 years. Data from HomeAdvisor indicates that addressing leaks promptly saves homeowners an average of $300-$500 in repair costs compared to ignoring the issue, which often leads to costly water damage. Proactive repair ensures structural integrity and avoids mold growth, which affects 85% of wooden bathtubs exposed to prolonged leaks.