EPDM, TPO, PVC, modified bitumen, and built-up roofing are different systems with different repair requirements. Knowing the material is more useful than calling every flat roof a rubber roof.

What to check first

  • Use installation records or manufacturer identification where possible.
  • Check whether a coating hides the original roof surface.
  • Compare repair requirements and condition rather than choosing a universal best roof.

Identify the roof before selecting a product

  1. Use reliable identification

    Look for installation records, membrane markings, or a qualified assessment. Color alone cannot reliably distinguish EPDM, TPO, PVC, or a coated asphalt surface.

  2. Identify any previous coating

    The material a sealant touches may be an old coating rather than the roof membrane. Product compatibility must account for that exposed layer.

  3. Confirm the current repair detail

    Review the manufacturer’s instructions for both the substrate and the type of defect. An installation demonstration is not a substitute for a suitable localized repair method.

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 Common Low-Slope Roof Materials: A Practical ComparisonOpens on YouTube ↗

From the project archive

Commercial Flat Roof - This is a BUR system also known as a Tar and Gravel roof.
Historical project photo · Flat Roof Doctor
Commercial Flat Roof - Metal roofs systems can be repaired.
Historical project photo · Flat Roof Doctor
Commercial Flat Roof - The image is an example of a 2 Ply Modified Bitumen Torch Down Rubber Roof System.
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.