If you already have faulty flashing installed you.
Installation of flashing at roof break.
Bend the corner flashing tightly around the corner.
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 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.
Nail metal flashing called drip edge along the bottom edge of the roof deck near the gutters.
Learn more about the installation of pitch transition trim by watching the short video or reading the transcript below.
Step flashing step flashing redirects the water back onto the shingle.
You will also need rake edge flashing for the sides of the roof.
Roof shingle over step flashing.
Step flashing on roof peak.
Prepare the area where you will install the roof flashing.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
These types of flashing are known as step flashing and turn back flashing.
How to install roof flashing against a wall.
Now we re going to look at something that does happen quite often.
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.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
And be capped on top with either a preformed metal drip cap or a custom flashing installed under the sheathing wrap.
The water table should overlap the foundation by about 1 in.
You need to make a bend of 10 degrees one half inch from the edge.
How to install porch roof flashing step 1.
Next place your vent flashing on top of the membrane.
Measure the length of the porch roof joint to determine how much flashing you will need.
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.
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.
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.
Use a metal break tool to bend the flashing according to the angle of the roof joint.
Make sure to install flashing around the chimneys and walls.
