Greeting I am currently working on the thermal performance of the building envelope of residential buildings where I am using wall insulation as a passive strategy to solve overheating problems in the summer period to achieve thermal comfort. the building that I'm simulating using EnergyPlus is a multi-story residential building located in a dense urban setting. I tried adding building insulation material with their respective thermal properties like thermal conductivity, density, and specific heat, with different thicknesses ( 50 mm, 100mm, 150 mm, 200 mm) at the inner face of the external wall. The output of respective scenarios show that the thicker the insulation the more indoor temperature is getting increased while it supposes to decrease. What could be the probable reason?