How thick should stone seats be for comfortable outdoor armchairs?

When designing or selecting stone seats for outdoor armchairs, thickness plays a crucial role in comfort and durability. Ideally, stone seats should be between 1.5 to 2.5 inches (4 to 6 cm) thick. This range provides a balance between structural stability and ergonomic comfort, preventing the seat from feeling too rigid or bulky.

Thicker stone (over 3 inches) may appear sturdy but can feel uncomfortable for prolonged sitting, while thinner slabs (under 1 inch) risk cracking under weight. For optimal comfort, consider slightly contoured or rounded edges to reduce pressure points. Pairing the stone with cushions can further enhance comfort without compromising the natural aesthetic.

Choose weather-resistant stones like granite or sandstone for longevity, and ensure proper support beneath the seat to distribute weight evenly. With the right thickness and design, stone armchairs can be both stylish and inviting for outdoor spaces.