CROSS Safety Report
This report is over 2 years old
A flat roof with parapets and internal downpipes collapsed after drainage outlets became blocked.
Key Learning Outcomes
For owners and operators:
Ensure regular inspections and maintenance are carried out on flat roofs where ponding is likely to occur, especially after heavy rainfall events
Regular inspections can help to detect safety issues which need addressing before they become hazardous
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There was a report on the collapse of a flat roof with parapets and internal downpipes. There were no overflows and the drainage outlets became blocked with leaves resulting in ponding and over-loading.
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Expert Panel Comments
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An obvious problem that should not have occurred but serves as a reminder about the inherent risk from such roofs and the importance of maintenance throughout the life of a building for it to remain safe. Maintenance information should be in the health and safety file.