Drip Edge LT installation sequence
ANSI/SPRI/FM 4435/ES-1 edge system: 24 Gauge Cont Cleat, Strip-In Cover, 10' Lengths. 6" Face 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, “Drip Edge LT Installation Guide”.
Step 1 of 5
Installing 24ga Galvanized Cleat
- Set the top lip of the cleat squarely on the top edge of the roofing membrane and the treated wood nailing plate.
- Press the cleats firmly into position and nail through the pre-punched holes.
- At a miter, fit the cleat into the corner as required to keep a continuous cleat line.
- Nail at a minimum 6" in each direction from the corner, or closer at special conditions.
As printed in the Drexel guide
“nail through the pre-punched holes with 1-1/4" S.S. Ring Shank Nails provided.”
Common mistakes this step guards against
- Do not break the cleat line at a corner - fit the cleat into the corner so the line stays continuous.
Parts, lettered as in the guide
- ADrip Edge LT 10'- 0" standard lengths
- BSplice Plate 6" lengths
- C24ga Galvanized Continuous Cleat 10'- 0" lengths
- DDrip Edge Miter (Outside corner shown)
- E1-1/4" S.S. Ring Shank Nail at 12" o.c. (6" from ends) (Included and required)
- F6" Cover Strip (By installer)
- GApproved Roofing Membrane (By installer)
Field checklist
Drip Edge LT - 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 break the cleat line at a corner - fit the cleat into the corner so the line stays continuous. (step 1)
- Do not butt lengths tight - leave the 1/4" gap for thermal expansion. (step 4)
- Do not leave a joint without a splice plate. (step 4)
- Do not cut lengths that leave short sections next to each other. (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: Drip Edge LT - performance series
- Face height 6" max.
- 1-1/4" S.S. Ring Shank Nails 12" on center through pre-punched hole and membrane
- 6" cover strip and primer over the roof flange
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" | - | 24 ga | -240 psf |
| .040 AL | 6" | - | 24 ga | -250 psf |
