For a low slope residential roof there are two main options.
Low slope roof to wall flashing.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.
Open valleys have metal flashing to protect this critical area of the roof.
Both the wall flashing and roof flashing should be fully adhered to the wall substrate.
Fasten the wall flashing at the top of the wall every 6 inches on center.
Flashing application requirements are similar for all types of low slope roof materials and systems.
The membrane will outlast the shingles and seal around all nail penetrations.
To connect the flashing material to other building materials such as masonry concrete metal and wood.
Fasten loose nails and cover exposed nail heads with roofing cement.
Then apply standard asphalt shingles over the membrane.
Apply a coping over the wall flashing and fasten with self tapping screws every 24 inches on center.
If you don t direct water from the roof into a gutter it can pour into the wall.
Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.
Although surprisingly there was only one leak in the old roof.
Recaulk the joints between the roof and the flashing.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
A comprehensive roofing specification writing tool allowing users to quickly write accurate steep and low slope roofing specifications for job submittal packages.
And in our experience when a single piece of flashing extends only a few inches under the shingles especially on a long roof slope and worse on a roof that happens to slope slightly towards rather than away from the abutting vertical building wall the accumulated roof drainage water near the bottom end of the roof wall intersection will overwhelm the width of the flashing and because it is not directed back out on top of successive shingle courses it leaks into the building or building.
Badly corroded flashing will need to be replaced.
Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs.
Ct 07 concrete or masonry wall base flashing with a 5 course flashing system.
Normally used with a low slope.
Low slope roof slip metal flashing for the roofing industry is available in standard 10 lengths from sheet metal supply.
Visiting my sister marlene in thunder bay this summer 2012 there was as usual a project like every other time.
Apply the wall flashing over the roof flashing and termination bar.
Roofing cement can dry out and crumble away exposing joints to water.
