Roof Flashing Leaks: Why Transitions Need Close Inspection

What to check first

• Follow the complete transition rather than sealing only the visible crack.
• Check the upper termination where water may enter behind flashing.
• Repair loose attachments and damaged materials before applying a surface repair.

Follow the connection from top to bottom

1. Find the upper entry point

   Inspect where flashing ends against a wall, curb, pipe, or other surface. Water entering behind that termination may bypass a patch lower down.

2. Correct the underlying defect

   Loose metal, rotten wood, failed fasteners, and deteriorated membrane need a suitable repair before waterproofing. A surface bridge needs stable, compatible material on both sides.

3. Keep the detail functional

   A repair should shed water without blocking outlets, weep paths, or intended movement. Use the specified reinforcement and dimensions for the product and detail.

Watch the field examples

These archive demonstrations show individual projects. Use the current guidance above and Bergstrom’s published instructions if an older video shows a different product or method. Torch work shown in installation videos is professional work.

From the project archive