Proper Roof Flashing

Base flashing is one length of flashing that is bent along the length.

Proper roof flashing.

Step flashing should always be used where the roof deck meets a sidewall. These are the key types of roof flashing you need to understand. Proper roof wall flashing example 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. Some roof features such as chimneys require two pieces of flashing.

Two ways to flash roof edges. This ensures that rain always. Details concrete masonry roofing wrb flashing. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.

Fasten loose nails and cover exposed nail heads with roofing cement. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Install an underlayment centered in the roof valley. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Recaulk the joints between the roof and the flashing. Recommended procedures of basic valley flashing installation. Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. 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. Some key points to remember. Step flashing can be made with aluminum copper lead galvanized steel or stainless steel but most commonly it is aluminum or copper.

It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. Pieces of step flashing are bent at an angle. Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing. One common method is to lay the edge metal under the eaves membrane and over the rake.

Step flashing step flashing redirects the water back onto the shingle. And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight. The first is called step flashing. Proper flashing around a chimney includes two layers.

How to install roof flashing against a wall. Base flashing is the solution for front walls.