How does concrete compare to stone in outdoor armchair thermal mass?

When choosing materials for outdoor armchairs, thermal mass is a critical factor affecting comfort and durability. Concrete and stone are both popular choices, but they differ significantly in thermal properties.

Concrete has a moderate thermal mass, absorbing and releasing heat gradually. This makes it comfortable in varying temperatures, as it stays cooler in direct sunlight compared to some stones. However, concrete can crack under extreme temperature fluctuations.

Stone, such as granite or basalt, typically has higher thermal mass, retaining heat longer and providing consistent warmth in cooler climates. Yet, it can become uncomfortably hot in direct sun. Natural stone is also more durable but often heavier and pricier.

For outdoor armchairs, concrete offers a balance of affordability and moderate heat retention, while stone excels in durability and long-term heat regulation. Your choice depends on climate, budget, and design preferences.