Quick Answer
To ensure flashing is installed correctly, use a 6-inch wide, 30-pound felt underlayment, and secure it with staples spaced 6 inches apart. Use a minimum of two rows of staples per layer, with the second row staggered 1/3 from the first. Ensure a 1-inch overhang of flashing at the eave.
Preparing the Deck
Before installing flashing, inspect the roof deck for any damage or rot. Replace any damaged boards and install a 6-inch wide, 30-pound felt underlayment, ensuring it covers the entire deck. Secure the underlayment with staples spaced 6 inches apart. Use a minimum of two rows of staples per layer, with the second row staggered 1/3 from the first.
Installing the Flashing
Install the flashing along the eave, ensuring a 1-inch overhang. Secure the flashing with 1-inch stainless steel screws, spaced 12 inches apart. Use a minimum of two screws per foot of flashing. Ensure the flashing is tight against the roof deck and the underlayment.
Sealing the Edges
Seal the edges of the flashing with a high-quality, 100% acrylic sealant. Apply the sealant to the exposed edges of the flashing, ensuring a 1/2-inch bead of sealant. Use a putty knife to smooth out the sealant, feathering it out towards the edges.
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