Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Flashing at base of wall sloped roof.
The flashing needs to be installed before installing the roof shingles the metal flashing is formed with a hook edge and cleated on 12 centers the flashing extends up the wall at least 4 the flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
Head flashings are used to direct water away from openings such as windows and doors.
This is where you will hang the counter flashing.
Badly corroded flashing will need to be replaced.
One common method is to lay the edge metal under the eaves membrane and over the rake.
Ensure the chimney s base flashing is in proper order secured to the roof as the manufacturer or mason recommends beneath the shingles.
An alternate base flashing fastening method is to use cleats spaced at 12 o c.
Installing step flashing to prevent roof leaks step flashing spans the joint between roof shingles and an adjacent side wall.
This detail can be used on either a sloped or a flat roof.
If you were not provided with base flashing you can install step flashing up the side of the chimney.
With this method l shaped pieces of metal that are a couple of inches longer than the shingle overlap are installed on top of each shingle adjacent to the sidewall and the flashing is then laced into each course.
Step flashing has been required for asphalt shingles at roof to wall intersections as far back as the 1986 cabo.
A sidewall is a junction between a wall and a sloped portion of a roof.
This flashing technique makes sure that the water flows away from the wall and into the gutter.
For an area where a vertical stucco wall meets a sloped roof you will use step flashing.
Fasten loose nails and cover exposed nail heads with roofing cement.
Stepped flashing is used where a sloped shingled roof intersects a vertical wall.
Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.
Recaulk the joints between the roof and the flashing.
The horizontal part of the flashing will vary depending on the type of roof covering material.
Here s how to install it correctly.
Common flashing details step flashing.
It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.
Another method of flashing a concrete wall is to cast the cap flashing into the wall.
Roofing cement can dry out and crumble away exposing joints to water.
Cut an indent into the chimney with a diamond bit saw diamond grinder disc.
