Econo Coping installation sequence
ANSI/SPRI/FM 4435/ES-1 edge system: 22 Gauge Formed Cont Cleat; (Front Face) Exposed Fastener; (Back Face) Drip Profile. 6" Face Max; 20" Wall Max; 5.25" Back Max.
This sequence follows Drexel Metals' published installation guide for the system. The project's specifications, the approved shop drawings and the roofing membrane manufacturer's requirements govern; where they differ, follow them and ask AFS. Source: Drexel Metals, “Econo Coping Installation Guide”.
Step 1 of 4
Installing 22ga Galvanized Cleat
- Before installing the cleat, make sure every metal component is isolated from ACQ-treated lumber with an appropriate membrane.
- Butt the cleats together at corners.
- Install the cleat working away from the corners.
- Attach the cleat with a nail into each pre-punched hole; within 3'-0" of a corner, nail at 6" on center.
As printed in the Drexel guide
“Attach the Cleat using 1-1/4" S.S. Ring Shank Nails provided, into each pre-punched hole.”
“When within 3'- 0" of corners, attach Cleat with 1-1/4" S.S. Ring Shank Nails at 6" on center.”
Common mistakes this step guards against
- Do not set metal on ACQ-treated lumber without an isolating membrane.
- Do not nail at more than 6" on center within 3'-0" of a corner.
Parts, lettered as in the guide
- AEcono Coping 10'- 0" standard lengths
- B22ga Galvanized Continuous Cleat 10'- 0" lengths
- CEcono Coping Miter Cap (Outside corner shown)
- D1-1/4" S.S. Ring Shank Nail at 12" o.c. (6"o.c. within 3'-0" of corners) (Included and required)
- E#9 -13x1-1/2" S.S. Washered Screw at 12" o.c. (Included and required)
Field checklist
Econo Coping - from Drexel's guide. Tick each item as it is done; print this page for the crew.
Common mistakes
Each line is the reverse of an instruction the Drexel guide states.
- Do not set metal on ACQ-treated lumber without an isolating membrane. (step 1)
- Do not nail at more than 6" on center within 3'-0" of a corner. (step 1)
- Do not butt sections tight - leave the 1/8" gap for thermal movement. (step 3)
- Do not cut lengths that leave short sections next to each other. (step 3)
- Do not leave end caps or end terms unrestrained - use at least two screws through the roof-side leg. (step 4)
Notes printed on the guide
- Isolate all metal parts from ACQ-treated wood, or any other galvanically incompatible material, with an appropriate membrane.
- Appliance attachments - lightning rods, signs, antennae - that penetrate the water seal, set up a galvanic reaction or otherwise compromise the roof edge system are to be eliminated or isolated, per section 8.0 of ANSI/SPRI ES-1. Isolate appliances from the edge system or do not attach them to it; the lightning protection manufacturer gives the attachment instructions.
Printed on the section detail
- Detail: Econo Coping - 16" and 20" max. tested widths
- Face height 6" max.
- Rear face 5-1/4" max.
- 1-1/4" S.S. Ring Shank 12" on center through pre-punched hole and membrane
- #9 S.S. Washered Woodscrew 12" on center
- Optional shim by installer
Drexel published ratings
Sustained pressure as Drexel publishes it (Drexel Metals DM-19063 "ES-1_GT-1 Certification Program Product Line Card" 12.09.25). Design Engineer must apply the Factor of Safety.
| Cover | Face up to | Wall up to | Cleat | Sustained pressure |
|---|---|---|---|---|
| 24 gauge | 6" | 16" | 22 ga | -110 psf |
| 24 gauge | 6" | 20" | 22 ga | -75 psf |
| .040 AL | 6" | 16" | 22 ga | -145 psf |
| .040 AL | 6" | 20" | 22 ga | -65 psf |