A targeted metal roof repair begins by exposing the condition of the seam or flashing. Covering an old patch without checking for rust or loose panels can seal over the evidence of a larger problem.

What to check first

  • Inspect the metal under failed sealants.
  • Replace unsound components when a surface patch cannot restore them.
  • Match the sealant to both the roof and any remaining finish.

Prepare the joint before sealing it

  1. Check movement and support

    Loose fasteners, separating joints, and deteriorated metal need attention before a liquid repair. Sealant is not a replacement for missing support or a failed attachment.

  2. Identify the bonding surface

    Determine whether you are bonding to bare metal, a factory finish, or an older coating. Remove loose rust and failing material as directed; leave a sound, clean, fully dry surface.

  3. Follow one compatible repair system

    For suitable Turbo Poly Seal seam repairs, embed the specified fleece in the wet base coat and saturate it with the top coat. Screw-head details may use sealant without fleece. Follow the current detail rather than mixing instructions from different products.

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.

Watch Metal Roof Recovery: Repair the Defect Before Coating · example 1Opens on YouTube ↗Watch Metal Roof Recovery: Repair the Defect Before Coating · example 2Opens on YouTube ↗Watch Metal Roof Recovery: Repair the Defect Before Coating · example 3Opens on YouTube ↗Watch Metal Roof Recovery: Repair the Defect Before Coating · example 4Opens on YouTube ↗

Product reference: Bergstrom Industries’ published knowledge catalog. Follow the latest product label and safety information. Historical project examples are educational and are not a specification for every roof.