Water has to leave the roof
Drainage patterns, low areas, scuppers, drains and gutters should be evaluated before selecting a repair approach.
- Standing-water patterns
- Blocked or undersized drainage paths
- Transitions between roof elevations
Seams and penetrations concentrate risk
Edges, seams, curbs, pipes, rooftop equipment and wall transitions interrupt the field of the membrane and require close inspection.
- Open or stressed seams
- Aged sealants and flashing
- Movement around equipment and penetrations
Material must match the assembly
A repair material should be compatible with the existing roof and the conditions at the repair zone. The correct method depends on what is already installed.
- Identify the existing membrane
- Review the substrate condition
- Confirm how the repair connects to sound material