That's an excellent and very important question! Absolutely, the wooden slats on outdoor benches can and should be made from woods that are naturally resistant to splintering. Choosing the right material is key to safety, comfort, and long-term durability.
The best choices are woods with tight grains and natural oils. Western Red Cedar and Teak are top-tier options. Cedar is naturally rot-resistant and has a straight grain that holds up well, while teak's high oil content makes it incredibly durable and smooth for decades. Ipe (Brazilian Walnut) is another supremely dense and hard option that wears smoothly.
For a virtually maintenance-free and guaranteed splinter-free experience, consider composite lumber. Made from wood fibers and plastic, it mimics the look of wood without the risk of splinters, cracking, or rot.
Proper maintenance is also crucial. Regularly sealing a quality wood like cedar with a UV-protective sealant will preserve its integrity and smooth surface. Always sand down any rough spots that may develop over time.
So, yes—by selecting the right species or alternative material and performing basic upkeep, you can enjoy a beautiful, comfortable, and completely splinter-free outdoor bench for years to come.