Climate change and the increasing of extreme weather events are posing new challenges for the construction industry, particularly regarding the maintenance of indoor comfort in low thermal mass building. Lightweight buildings, such as wooden construction, while ensuring high energy performance in terms of insulation, are more vulnerable to temperature fluctuations and the risk of simmer overheating. In this context, phase change materials (PCM) can represent a passive strategy to increase thermal inertia of the building envelope, thanks to their properties which allow to absorb and release latent heat during the phase transitions, contributing to the indoor temperature stabilization and reducing overheating risk.