Coping, fascia and gravel stop fabrication · Lesson 2 of 4

Coping, fascia and gravel stop fabrication: materials, standards and design constraints

ES-1, ED-1 and the project specification; ED-1 thickness for flat faces and why it is not a wind rating; cleat gauge; galvanic rules; thermal movement and joints; and the AFS limits that decide what can be formed.

You will be able to: Tell the test standard from the design standard and the project spec, pick a face thickness and cleat gauge, keep metals compatible and free to move, and apply AFS shop limits to an edge.

13 min · 12 slides · 12 questions

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Slide 1 of 12

Test, design, code

ES-1 is the test standard; ED-1 is SPRI's design standard.

The current ES-1 is the 2022 edition. The approved ED-1 is the 2019 edition; a revision was proposed in October 2025.

NRCA points to 2024 IBC section 1504.6: metal edge systems on built-up, modified bitumen and single-ply roofs, except gutters and counterflashing, are to be tested to ES-1.

Sources

Glossary

ES-1: ANSI/SPRI/FM 4435/ES-1, the test standard for roof edge systems on low-slope roofs; 2022 edition.
ED-1: SPRI's design standard for roof edge systems; approved edition 2019.
RE-3: The ES-1 test for edges with an exposed top over 4 in, such as copings: top and face loaded together.
Oil-canning: Visible waviness in a flat face; ED-1 notes thicker metal reduces it.
Galvanic compatibility: Metals that can touch without one corroding the other; ED-1 asks for the same metal or compatible pairs.
Girth: The flat width of the blank: every leg plus the hem allowances. AFS limits it to 48 in.