An investigation into roof failures: Causes, effects and remedy

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The roofing component of a building affects the long-term quality and life cycle cost of a building. Roof is defined as the topmost covering of a building which provides shelter for the inhabitants or occupants. Aim of this research is to investigate into the cause, effects and remedies to solve roof failures. Three (3) objectives were developed to assist the realization of the main aim, these are To identify the causes of roof failures commonly experienced by roof experts, To identify the effects of roof failure, To identify remedies to minimize the incidences of roof failures. The investigation examined roof styles, types, designs and functional requirements in general and specifically discussed problems associated with roof and roof failure with particular reference to its effects An extensive literature review was conducted in the construction industry as a whole, basically the roof industry. This review was supported with an in-depth exploratory interview and questionnaire to verify the issue and problems identified in the literature and expand into new area that might not have been given expanded view in literature. Information and results obtained from the in depth literature and survey provided the basis for the selection and development of the Questionnaires as a data collection tool from respondents for the analysis. The questionnaires administered were 30 with a retrieval number of 26 accounting for a response rate of 85%. The Statistical Programme for Social Scientists (SPSS) was used to process the data. The analysed data are presented in the form of tables and figures. Descriptive statistics and mean score ranking was used in the data analysis The paper identified causes of roof failures to be Design of Building, incompetence of workers, Poor installation, and inclement weather. Categorisation of these roof defects is also defined in this paper. Decreased of property value, cost expenses and structural deterioration are effects identified with roof failure. The paper conclude by laying down recommendations. The paper recommends Good Building maintenance functions as one of the strongest practical remedies that may help in arresting these problems.
A thesis submitted to the Department of Construction Technology and Management, College of Art and Built Environment in partial fulfillment of the requirements for the Degree of Master of Science.
Pitch roofs, Roof leakages, Proper supervision