Install Flashing Roof Meets Wall

At the bottom of the roof water needs to be directed.

Install flashing roof meets wall. Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. 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. Hammer one nail to the.

Where snow buildup is likely add a wide band of peel and stick membrane lapped over the step flashing but under the sheathing wrap. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. Ensure it sits flat and extends at least 8 inches above the shingles. 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.

Step flashing redirects the water back onto the shingle. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Begin by removing the shingles at the affected area and removing old flashing if present. How to install step flashing with a wall corner step three.

Bend it back so that it overlaps the corner flashing. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. Nail it in place with two nails one. Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration.

This is true no matter what type of roof covering material is installed. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Above the roof sheathing. Then set the piece down.

This illustration shows proper flashing at a headwall condition. Flexible flashing tape seals the eave to the wall. I cut the tape so that it laps onto the housewrap above and 3 in. 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.

Then nail the new l shaped flashing under the builder s felt but above the fascia board. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. Bend the roof edge of the flashing down over the peak and nail the wall side to the sheathing extending past the peak. Click to enlarge make sure the sheathing wrap overlaps all step flashings.

Obviously the further up the wall a flashing extends the greater the resistance to water intrusion. Install a reverse peak flashing for the other side of the roof so the two. Kickout flashing keeps water out of walls rain should run off the roof and into the gutter.