In the event of water leakage from a roof expansion joint, the following steps can be taken to quickly resolve the issue:

Locate Water Leak Points: First, identify the location of the leak, then find the leak point.

Clear the area around the leak: Clean the area surrounding the leak to ensure proper repair.

Seal the Gaps: Repair gaps using waterproof sealant or cement. Apply evenly and consistently in thickness to ensure a tight seal.

Conduct Test: After repairs are completed, water test is conducted to ensure that the leakage issue has been resolved.

Maintain Roofs: Regularly inspect for any deformities or damages to the roof, and promptly carry out maintenance and repairs to prevent leaks.

Here are the steps for quickly resolving roof deformation joint leakage issues. If professional repair is needed, it is recommended to consult a professional roofing repair company.