Proper Roof Flashing

Details concrete masonry roofing wrb flashing.

Proper roof flashing.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Recommended procedures of basic valley flashing installation. Base flashing is one length of flashing that is bent along the length. Install an underlayment centered in the roof valley.

Fasten loose nails and cover exposed nail heads with roofing cement. These are the key types of roof flashing you need to understand. 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.

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. Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Pieces of step flashing are bent at an angle. The first is called step flashing. It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. One common method is to lay the edge metal under the eaves membrane and over the rake.

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. And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight. Some roof features such as chimneys require two pieces of flashing. Step flashing can be made with aluminum copper lead galvanized steel or stainless steel but most commonly it is aluminum or copper.

Recaulk the joints between the roof and the flashing. Two ways to flash roof edges. This ensures that rain always. Step flashing step flashing redirects the water back onto the shingle.

Proper flashing around a chimney includes two layers. How to install roof flashing against a wall. Continuous flashing is also called apron flashing because it acts a lot like an apron. 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. Base flashing is the solution for front walls.