How To Install Drip Edge Flashing On Existing Roof

At the eaves when installing the drip edge on top the underlayment a 4 inch wide layer of asphalt roof cement complying with the astm d4586 type i or type ii is required.

How to install drip edge flashing on existing roof. Using drip edge with a nailing edge approx. The drip edge should be installed on top of the underlayment at all rakes and below or on top of the underlayment at the eaves. The roof leg should extend a minimum of 2 back onto the roof sheathing. Make sure the outer edge extends over the gutter.

Secure the drip edge with roofing cement. Lift the shingles slide the drip edge underneath them and position it so that it extends over the gutters then replace the shingles and push down to seat the drip edge. Slip the wide flat flange of the material all the way under the first course of roof shingles as illustrated. This will allow for expansion and contraction and prevent buckling.

Coat the flat part of the flashing that sits on the deck using a putty knife. Apply roofing cement when installing drip edge on an existing roof. Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. If it doesn t pull the drip edge out slightly from under the shingles.

In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation. How to install a drip edge. Use a flat pry bar to remove drip edge nails along the eave and rakes. Typically flashing is installed using roofing nails and roofing cement.

At 7 05 paul begins replacing the drip edge roof flashing. You may need to use a putty knife to break the seam between the first course and the starter strip. 4 deep nail the drip edge to the sheathing every 16 if installing multiple runs of drip edge lap them by 1 4 1 2 inch keeping the nail back from the lapped joint. Install the starter course.

Slide the flat bar under starter course and pry out the nails. While the vertical leg should be placed 1 4 1 2 away from the fascia.