Rule-based Mamdani-type fuzzy modelling of thermal performance of multi-layer precast concrete panels used in residential buildings in Turkey

► We modelled outer walls of residential buildings in 81 cities of Turkey for the purpose of investigate insulation layer thickness (d2). ► In order to examine d2, rule-based Mamdani-type fuzzy modelling (RBMTF) has been designed. ► The d2 was predicted using two input parameters which are Uw and Te. ► For Uw the values ranged from 0.4 to 0.7 and for Te, from −43 °C to −3 °C. ► R2 for the testing data were about 97.4% and RBMTF can be used as a reliable modelling method for thermal performance of multi-layer precast concrete panels used in residential buildings' studies.