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Installation Sequence Studio

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.

Drexel guide (PDF)

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

  1. Set the top lip of the cleat squarely on the top edge of the roofing membrane and the treated wood nailing plate.
  2. Press the cleats firmly into position and nail through the pre-punched holes.
  3. At a miter, fit the cleat into the corner as required to keep a continuous cleat line.
  4. 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.
Loading 3D view…
This step does not install the cover. Shown: the FlashDraft “Drip Edge” section, the cover only - the cleat, splice plates and fasteners are in the parts list.

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

  1. Isolate all metal parts from ACQ-treated wood, or any other galvanically incompatible material, with an appropriate membrane.
  2. 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.

CoverFace up toWall up toCleatSustained pressure
24 gauge6"-24 ga-240 psf
.040 AL6"-24 ga-250 psf