Evaluation of Three Different Retrofit Solutions Applied to the Internal Surface of a Protected Cavity Wall

Abstract A south-east oriented facade of a protected building of Politecnico di Milano has been retrofitted on its inner surface with respect to energy consumption and thermal comfort. Three prototype solutions including special perlite boards and aerogel composite materials have been used. The wall has been monitored by a wireless system of temperature, moisture and heat flux sensors before and after retrofit for about 6 months each. The acquired data enabled the determination and transient behaviour of hygro-thermal properties of the investigated facade before and after retrofitting using the average method. Measured results were compared to those obtained from thermo-hygric simulations.