That's an excellent and very practical question! The answer isn't a simple yes or no—it depends heavily on your specific bench and the condition of your pavers. Generally, a heavy, well-built bench can often sit directly on stable, level pavers. The key words here are *stable* and *level*. If your paver base is solid and the surface is perfectly flat, the bench's weight is distributed evenly, preventing wobbling or sinking.
However, there are crucial situations where a dedicated foundation is highly recommended. For lighter weight benches, uneven or slightly shifting pavers, or in areas with frequent freeze-thaw cycles, adding a foundation is wise. A simple DIY solution is to create small concrete footings beneath the bench's legs. Pour concrete into tube forms set below the frost line (if applicable) or onto a compacted gravel base. This creates stable pads that prevent movement. Alternatively, you can use adjustable patio deck supports or plastic pedestals designed for pavers to achieve a perfectly level base.
So, while you can place a bench directly on pavers for a quick setup, taking the extra step to ensure a solid foundation dramatically increases stability, safety, and the longevity of your bench. Always check your bench's manual for manufacturer-specific recommendations.