The Stamford project illustrates the value of reviewing drainage and roof details together. Ponding, raised edges, clogged strainers, and curb flashing problems can remain even after a new membrane is installed.

What to check first

  • Find features that hold water on the roof.
  • Inspect coping and parapet transitions.
  • Check that drains remain low enough after the roof thickness changes.

Evaluate the complete roof assembly

  1. Inspect what is beneath the surface

    Wet insulation, damaged decking, unsuitable attachment, and trapped moisture can change the scope of work. A new top layer cannot restore deteriorated supporting components.

  2. Plan the transitions and drainage

    Coordinate edges, parapets, penetrations, drains, and overflow routes with the selected system. These connections are part of the roof, not finishing details to improvise later.

  3. Use a building-specific specification

    Follow the selected manufacturer’s assembly requirements and appropriate professional review. Torch application, structural changes, and concealed damage need qualified personnel rather than a general DIY recipe.

From the project archive

Commercial Rubber Flat Roof - This is a good example of what a EPDM looked like after several yeas and why we need to replace it.
Historical project photo · Flat Roof Doctor
Commercial rubber Flat roof - Most old commercial roofs still have the old half round clay pipes that covers a parapet wall.
Historical project photo · Flat Roof Doctor
Commercial Rubber Flat Roof - It is far better to close the internal drains and install scuppers on a commercial roof if situation can permit so.
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.