The World Health Organisation recommends a minimum indoor temperature of 16ºC to reduce the risk of respiratory infections.*  Concrete’s thermal mass helps maintain temperatures above this level.  In a concrete structure, temperatures are less likely to drop below 9ºC, a level where there is an increased risk of dust mites and allergens.  Concrete walls also tend to remain at a more stable temperature, reducing condensation and thereby minimising mould and fungi growth.

*Designing comfortable homes: guidelines on the use of glass, mass and insulation for energy efficiency. (2001). Wellington, New Zealand. Cement and Concrete Association of New Zealand.

British Precast - Concrete for energy-efficient buildings. The benefits of thermal mass