When you install roof flashing you will need to use a sealant.
Proper roof flashing installation.
The roof deck flange of step flashings are to be fastened to the surface of each shingle in a position whereby the next course of shingles will cover up hide the flashing from view.
Two ways to flash roof edges.
Proper installation of step flashing.
Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.
It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.
The flashing integrates the roof cladding into the wall cladding to keep water out.
Recaulk the joints between the roof and the flashing.
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.
You will also need rake edge flashing for the sides of the roof.
Step flashings are to be installed one per course.
As a protectant flashing is placed anywhere on the roof s surface that requires extra protection.
How to install roof flashing against a wall.
Secure the horizontal flange to the roof deck using two nails.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Details concrete masonry roofing wrb flashing.
However when flashing crowne slate with its much larger 10 exposure the flashing piece would need to be 10 x 12.
These areas include anywhere there are intersections or joints such as edges around chimneys vents skylights roof valleys and soil stacks.
One common method is to lay the edge metal under the eaves membrane and over the rake.
To install the flashing piece on the first course place it over the end of the starter strip.
If nailed to both the flashing may deform under the pressure from shifting brick or wood.
Place it so the tab of the end shingle covers it completely.
Fasten loose nails and cover exposed nail heads with roofing cement.
