Why a tested edge system still depends on its nailer and anchors, what the ES-1 test does and does not cover, the words designers use for the substrate, and who designs which link.
You will be able to: Name the links in a roof-edge attachment chain, tell what an ES-1 test covers from what it leaves to the engineer of record, define substrate, nailer, pull-out and pull-through, and state the safety boundaries of assessing a roof edge.
11 min · 10 slides · 8 questions
All lessons in this moduleED-1 commentary says blow-off resistance depends not only on how the edge is attached to the building, but also on the integrity of the nailer or other substrate.
It asks that the load path from the nailer to the foundation be considered, and that the design professional or the authority having jurisdiction decide if it is complete.
ED-1 text here is the October 2025 proposed revision.
What this video shows: A one-minute clip from a testing laboratory's channel on the ES-1 RE-3 coping test; its description quotes SPRI that ES-1 testing should be performed on systems as made by a given fabricator. The description does not say what the test specimen was mounted on. Checked against the video's description.
Video: ANSI/SPRI ES-1 Coping Pull Off - RE-3 Test by National ES Testing Service Tunney, on YouTube. Chosen from the video's published description.
What this video shows: An IBHS full-scale wind test in which one failed connection raised the load on the next and the roof was torn away. It shows a house and carport, not a roof edge, so treat it as an analogy for a load path with a weak link. Checked against the video's description.
Video: What Really Caused This Roof to Fail? | High Wind Test Reveals the Weak Link by Insurance Institute for Business & Home Safety (IBHS), on YouTube. Chosen from the video's published description.