Building maintenance technology essentially deals with the study of the occurrence of building defects and the remedies that such defects would require.
A building must meet various requirements and withstand the rigours of climate, and at the same time it isexpected to last for many years, preferable with minimal maintenance.
A wall is a vertical structure forming an inside or an outside surface of a building, usually built of stone, wood, plaster or brick, which acts as a boundary or keeps something in or out.
Before choosing a repair method one must first determine the cause of the failure, which could be either settlement or heaving. If the corner of the building is low, for instance, it may be difficult to know whether the perimeter has set teed or the centre of the floor has heated up.