A leaking patch can hide poor preparation, an incompatible product, or movement at the original detail. Investigate why the repair failed before applying another layer.

What to check first

  • Identify the old patch material.
  • Check whether the surface underneath is sound and dry.
  • Remove an incompatible previous repair as directed before switching products.

Choose an EPDM-compatible repair

  1. Confirm that the surface is EPDM

    Check project records or obtain a qualified identification. A black roof may also be asphalt based, and a coating can disguise the original material.

  2. Assess the area under the old patch

    Peeling edges, trapped moisture, or damaged membrane need attention. Do not keep stacking incompatible materials over an uncertain repair.

  3. Use the appropriate system

    Do not apply Turbo Poly Seal directly to EPDM. Review Super Silicone Seal guidance or the membrane manufacturer’s approved EPDM repair method. Prepare and dry the surface completely before application.

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 EPDM Repair Case Study: Find the Failure beneath the Patch · example 1Opens on YouTube ↗Watch EPDM Repair Case Study: Find the Failure beneath the Patch · example 2Opens on YouTube ↗

From the project archive

EPDM Rubber Roofs issues - EPDM Rubber Roofs - Multiple repair patches on an EPDM rubber roof is a strong indication that the roof has failed.
Historical project photo · Flat Roof Doctor
Patching an EPDM rubber membrane becomes endless due to the its deterioration from harmful UV rays.
Historical project photo · Flat Roof Doctor

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.