Yes, in most cases you can replace individual seating slats on outdoor benches when they crack, though the process depends on your bench's construction and material. For wooden benches, replacement is typically straightforward if you can find matching lumber. Simply remove the fasteners holding the damaged slat, carefully extract it, cut a new slat to match the dimensions, and secure it using the same hardware. Composite and metal benches may require manufacturer-specific parts or specialized tools for proper replacement.
Before attempting repairs, inspect how the slats are attached. Common fastening methods include screws from underneath, bolts through the sides, or specialized mounting brackets. Take photos of the undamaged slats and their attachment points to guide your replacement process. If your bench is under warranty, contact the manufacturer first, as DIY repairs might void coverage.
For best results, use weather-resistant materials that match your bench's original construction. Pressure-treated wood, cedar, or tropical hardwoods work well for outdoor applications. Apply a protective sealant to new wooden slats before installation. Regular maintenance like cleaning and resealing can prevent future cracking and extend your outdoor furniture's lifespan significantly.