Install Flashing Roof Meets Wall

Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration.

Install flashing roof meets wall.

Hammer one nail to the. Install a reverse peak flashing for the other side of the roof so the two. Flexible flashing tape seals the eave to the wall. Above the roof sheathing.

Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. Obviously the further up the wall a flashing extends the greater the resistance to water intrusion. At the bottom of the roof water needs to be directed.

To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width. A headwall is a level junction where a roof meets a wall. This is true no matter what type of roof covering material is installed. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles.

Kickout flashing keeps water out of walls rain should run off the roof and into the gutter. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. This illustration shows proper flashing at a headwall condition. How to install roof flashing against a wall.

Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. Where snow buildup is likely add a wide band of peel and stick membrane lapped over the step flashing but under the sheathing wrap. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.

Step flashing redirects the water back onto the shingle. Click to enlarge make sure the sheathing wrap overlaps all step flashings. Then nail the new l shaped flashing under the builder s felt but above the fascia board. Begin by removing the shingles at the affected area and removing old flashing if present.

Use roofing nails to install the l shaped flashing flush with the roof and wall then cover it with roofing cement and reattach the roofer s felt. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Bend it back so that it overlaps the corner flashing. Ensure it sits flat and extends at least 8 inches above the shingles.

I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. Bend the roof edge of the flashing down over the peak and nail the wall side to the sheathing extending past the peak. How to install step flashing with a wall corner step three.