I'm working on finding out best suitable building material (brick) for semi-arid climate of India. The building environment that I'm simulating is a multi-storey builidng located in a dense urban setting. I tried changing building material with their respective thermal properties like thermal conductivity, density and specific heat. The output of respective scenarios didn't showed noticeable difference as it should be. Like, the building low thermal conductivity and higher specific heat should have lower air temperature than the building having material of high thermal conductivity and low specific heat. What could be the probable reason ?