Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
Installation of flashing at roof break.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
These types of flashing are known as step flashing and turn back flashing.
You will also need rake edge flashing for the sides of the roof.
Now we re going to look at something that does happen quite often.
The water table should overlap the foundation by about 1 in.
If you already have faulty flashing installed you.
You ll have a steeper part of your roof turning into a lower slope so there s a steeper pitch up top and a lower pitch on the bottom.
Make sure to install flashing around the chimneys and walls.
You need to make a bend of 10 degrees one half inch from the edge.
And be capped on top with either a preformed metal drip cap or a custom flashing installed under the sheathing wrap.
Cut a slit in the sheathing wrap along the entire length of the water table and slip the upper leg of the flashing under the wrap see illustration.
Step flashing on roof peak.
How to install roof flashing against a wall.
Bend the corner flashing tightly around the corner.
Cut the flashing with tin snips if you need to cut it.
Flashing is generally 8 inches wide with 4 inches going on the wall of the house and 4 inches going on the top of the roof shingles.
How to install porch roof flashing step 1.
Roof shingle over step flashing.
Step flashing step flashing redirects the water back onto the shingle.
Learn more about the installation of pitch transition trim by watching the short video or reading the transcript below.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
There s no need to nail more than this and don t nail through the flashing into the shingle as this will introduce a potential leak to the roof.
Prepare the area where you will install the roof flashing.
Installing drip edge on a humpy old roof dealing with dips and making clean overlaps metal drip edge flashing is installed on the perimeter of a roof to direct water away from the fascia into the gutters and to keep wind blown rain videos roofing wrb flashing drip edge installation on an existing roof.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Next place your vent flashing on top of the membrane.
Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Nail metal flashing called drip edge along the bottom edge of the roof deck near the gutters.
