ABSTRACT
Heritage Building Information Modelling (HBIM) and environmental simulation can play a pivotal role in facilitating historic buildings retrofitting. Promising benefits of HBIM include modelling of thermal properties of different building components, thus facilitating environmental simulation of different alternatives, making the success of green retrofitting more likely. Lynn Bellenger, the ASHRAE president simulation tools would be robust enough to be able to assess various aspects of environmental performance. Torun Widstrom identified differences that distinguish historic buildings from modern buildings including complexity in geometry, lack of insulation, cultural values and demand for reversible. For historic building retrofitting to become common practice, the obstacles need to be minimized and new technologies need to be introduced to make the retrofitting more rewarding. Built drawings is by far the most deterring obstacle that faces historic building retrofitting. Historic buildings are relatively more geometrically complex than other existing buildings, as they are full of details, ornaments, projections, and recesses.
