How to Install a Roof Drip Edge

Written by andrew todd Google
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A roof drip edge is an essential component to any roof. The drip edge not only provides a clean, finished look to the roof but it also prevents water from seeping into the roof and damaging the underlayment and wood. Builders typically install drip edge before the shingles but if you must repair a damaged drip edge, make the repairs on a warm day so that you can easily lift the shingles and slide the drip edge underneath.

Skill level:
Moderately Easy

Things you need

  • Ladder
  • Pencil
  • Tin snips
  • Roof cement
  • Caulk gun
  • Hammer
  • Short roofing nails

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  1. 1

    Align the drip edge so that the side is flush with the bottom corner of the roof and the top hangs over the edge.

  2. 2

    Mark the drip edge using the pencil so that you can trim the drip edge to fit the contour of the roof.

  3. 3

    Trim the drip edge on the line that was marked using tin snips.

  4. 4

    Apply a continuous bead of roofing cement using a caulk gun to the underside of the top of the drip edge.

  5. 5

    Place the drip edge on the side of the roof, aligning the end with the bottom of the roof. If shingles are already installed, lift the sides of the shingles and slide the drip edge under the shingles. The drip edge should hang over the gutter. If it does not hang over the gutter when fully inserted, pull the edge out until it does.

  6. 6

    Secure the drip edge further by hammering small roofing nails through the drip edge into the roof. Insert the nails approximately every 12 to 15 inches under the shingles.

  7. 7

    Align the next piece of drip edge so that it overlaps on top of the previous piece. It is important to overlap the pieces to ensure that water running down the roof will not penetrate between the two pieces.

  8. 8

    Repeat the installation process for the remainder of the drip edge.

Tips and warnings

  • When purchasing drip edge, choose a model that is corrosion resistant.
  • Ensure that your drip edge's gauge is .036 or higher to ensure durability.

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