摘要:Heritage building roof element conservation is a way to maintain the heritage and prolong the use of a historic building. In addition, the aims are to ensure that historic buildings that have been preserved don’t face the problem of damage and preserve architectural design. The objective of this study was to identify types of roof elements defects of colonial historic buildings and their causes. The survey is done to achieve this objective by inspecting the building. The survey results showed that various types of roof defects are caused by water. Conservation methods should be taken by owner to preserve the historic buildings from damage. Hopefully this study will give a better understanding of the conservation of the historic building roofs.