Install Flashing Roof Meets Wall

Step flashing redirects the water back onto the shingle.

Install flashing roof meets wall.

Begin by removing the shingles at the affected area and removing old flashing if present. Nail it in place with two nails one. Install a reverse peak flashing for the other side of the roof so the two. Then set the piece down.

Ensure it sits flat and extends at least 8 inches above the shingles. Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. How to install step flashing with a wall corner step three.

Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. Kickout flashing keeps water out of walls rain should run off the roof and into the gutter. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. 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. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles. 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.

I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Where snow buildup is likely add a wide band of peel and stick membrane lapped over the step flashing but under the sheathing wrap. Above the roof sheathing.

Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. How to install roof flashing against a wall. I cut the tape so that it laps onto the housewrap above and 3 in. This illustration shows proper flashing at a headwall condition.

Then nail the new l shaped flashing under the builder s felt but above the fascia board. 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. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. A headwall is a level junction where a roof meets a wall.

Bend the roof edge of the flashing down over the peak and nail the wall side to the sheathing extending past the peak. Hammer one nail to the. Click to enlarge make sure the sheathing wrap overlaps all step flashings.