how to install step flashing
How do you install step flashing on a roof?
Does step flashing go over or under shingles?
Instead of installing the step flashing between shingles, the flashing rests on top of the shingles. It’s not unusual to see sealant installed when sidewall flashing is missing. Sealant will eventually dry, shrink and crack. You’ll see sealant substituted for flashing in a lot of different areas on roofs.
Should you nail step flashing?
Each piece of step flashing laps over the shingle below and under the shingle above. The bottom edge of the flashing should extend just below the nail line. Attach each piece with a single nail high enough to be covered by the next course of flashing, the building wrap, and the siding.
Can you install step flashing without removing siding?
Retrofitting Step Flashing Without Removing the Siding
We needed to cut back the siding to create a new air gap but we knew that 3/4″ was not enough to slip flashing under without damaging the siding. Our solution was to cut a 6-1/4″ of the siding away, creating a space to allow the installation of step flashing.
How much does step flashing overlap?
Because the flashing is 2 inches wider than the exposure of the shingles, each step flashing piece will overlap the one on the course below by 2 inches. Nail the flashing to the roof deck only.
Does flashing go over or under tar paper?
Installing roof drip edge flashing properly
The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge. This lets any water that gets on the roof run down the underlayment and over the drip edge.
Can you replace step flashing without removing shingles?
Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. 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 far should flashing go under shingles?
Typically, 10- by 8-inch (253 mm x 203 mm) flashing is chosen. Those 8 inches are more than enough to cover the exposure of typical shingles.
How do you install flashing on the side of a house?
How do you install flashing under existing shingles?
How do I add flashing to an existing deck?
To add flashing, first remove the deck board that runs alongside the house. If the boards run diagonally, snap a chalk line 5-1/2 in. from the house, then set the blade in a circular saw to the depth of the decking boards and cut off the board ends. (Replace the cutouts at the end of the job with a 5-1/2-in.