Ask an architect: What is thermal mass?

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Thermal Mass 

Thermal mass is the ability for a material to absorb and store heat. When utilised correctly, it can help your home maintain consistent and comfortable internal temperatures.

Architopia designs predominantly use an exposed concrete slab floor as a thermal mass.

In winter, the concrete floor will absorb the heat generated by the sunlight that hits it during the day. In the evening, when the air temperature drops, the floor will retain its warmth - helping your home stay warmer for longer.

In summer, when the sun is higher in the sky, the effect is reversed. The concrete floors are shaded from direct sunlight during the day and the floor maintains it’s cooler temperature - keeping your home cooler for longer.


Photo: The thermal mass of the exposed concrete floor in our L Shape House soaking up the sun on a winter afternoon.


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