This course has its importance because after construction of buildings they need proper repair and maintenance to serve their purpose efficiently and effectively throughout their service life. In this course you will come to know about the defects in buildings and building materials and their deterioration over the period of time. The defects in buildings may be due to use of defective building material and workmanship. Deterioration in buildings and materials may be due to environmental and other external agents, improper use and lack of proper care of building over the time.