To seal the juncture of the roof membrane with other building components such as walls edges and penetrations.
Low slope roof to wall flashing.
It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.
Reshingling a low slope roof and a few things not to do this article covers reshingling a low sloped roof and a few things you should avoid when shingling such a roof.
Flashing application requirements are similar for all types of low slope roof materials and systems.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Open valleys have metal flashing to protect this critical area of the roof.
For a low slope residential roof there are two main options.
Normally used with a low slope.
Then apply standard asphalt shingles over the membrane.
Fasten loose nails and cover exposed nail heads with roofing cement.
Apply a coping over the wall flashing and fasten with self tapping screws every 24 inches on center.
Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.
A comprehensive roofing specification writing tool allowing users to quickly write accurate steep and low slope roofing specifications for job submittal packages.
Fasten the wall flashing at the top of the wall every 6 inches on center.
Apply the wall flashing over the roof flashing and termination bar.
Ct 07 concrete or masonry wall base flashing with a 5 course flashing system.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
Visiting my sister marlene in thunder bay this summer 2012 there was as usual a project like every other time.
Recaulk the joints between the roof and the flashing.
Both the wall flashing and roof flashing should be fully adhered to the wall substrate.
Badly corroded flashing will need to be replaced.
Although surprisingly there was only one leak in the old roof.
To connect the flashing material to other building materials such as masonry concrete metal and wood.
Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs.
Roofing cement can dry out and crumble away exposing joints to water.
If you don t direct water from the roof into a gutter it can pour into the wall.
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.
The membrane will outlast the shingles and seal around all nail penetrations.
