Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Proper roof flashing.
The first is called step flashing.
Fasten loose nails and cover exposed nail heads with roofing cement.
Recommended procedures of basic valley flashing installation.
Recaulk the joints between the roof and the flashing.
Install an underlayment centered in the roof valley.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Some key points to remember.
Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney.
Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.
How to install roof flashing against a wall.
Step flashing should always be used where the roof deck meets a sidewall.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
Two ways to flash roof edges.
Small l shape flashing pieces must be woven into the.
Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations.
Some roof features such as chimneys require two pieces of flashing.
This ensures that rain always.
These are the key types of roof flashing you need to understand.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Continuous flashing is also called apron flashing because it acts a lot like an apron.
Step flashing step flashing redirects the water back onto the shingle.
Pieces of step flashing are bent at an angle.
Details concrete masonry roofing wrb flashing.
One common method is to lay the edge metal under the eaves membrane and over the rake.
It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.
And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight.
Base flashing is one length of flashing that is bent along the length.
Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps.
Although roof flashing is occasionally fabricated from plastic roofing felt or rubber it is usually made of rust resistant metal galvanized steel aluminum or copper.
Step flashing can be made with aluminum copper lead galvanized steel or stainless steel but most commonly it is aluminum or copper.
