Proper Roof Flashing

Continuous flashing is also called apron flashing because it acts a lot like an apron.

Proper roof flashing.

Even if one piece of step flashing fails the flashing and shingle below it start the process over again. 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. Recaulk the joints between the roof and the flashing. 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.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Step flashing should always be used where the roof deck meets a sidewall. It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. How to install roof flashing against a wall.

The first is called step flashing. 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. Base flashing is one length of flashing that is bent along the length. One common method is to lay the edge metal under the eaves membrane and over the rake.

And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight. Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. Pieces of step flashing are bent at an angle. Some roof features such as chimneys require two pieces of flashing.

Install an underlayment centered in the roof valley. Two ways to flash roof edges. Fasten loose nails and cover exposed nail heads with roofing cement. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations. Step flashing step flashing redirects the water back onto the shingle. These are the key types of roof flashing you need to understand.

Recommended procedures of basic valley flashing installation. Step flashing can be made with aluminum copper lead galvanized steel or stainless steel but most commonly it is aluminum or copper. Some key points to remember. This ensures that rain always.

Details concrete masonry roofing wrb flashing. Proper flashing around a chimney includes two layers.