Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.
Roof wall flashing techniques.
There are two good ways to handle corner flashing.
Fasten loose nails and cover exposed nail heads with roofing cement.
Knowing the different types as well as the techniques to implement can be helpful.
Badly corroded flashing will need to be replaced.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
The first bending two pieces and caulking the joint photos 1 3 is the most common because you can do it on the spot with the flashing at hand.
Details concrete masonry roofing wrb flashing.
Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.
All exterior wall coverings whether it is wood siding vinyl siding brick or stone veneer stucco etc.
Roofing cement can dry out and crumble away exposing joints to water.
Waterproof your windows with liquid flashing learn how to install liquid applied flashing to seal the rough opening while leaving a path for water to escape.
Do not seal housewrap or building paper to step flashing.
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.
There have always been problems with the flashing details at head walls rake walls and chimneys especially if stucco brick or stone veneer is used.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
Recaulk the joints between the roof and the flashing.
So what do you do when you find yourself needing roof flashing.
Run the base flashing 4 to 5 in.
Where snow buildup is likely add a wide band of peel and stick membrane lapped over the step flashing but under the sheathing wrap.
Roof to wall flashing.
For deck flashing.
Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration.
Without the roof flashing against those walls water would slowly drip into the space between the roof and wall and even potentially into the home.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Epdm flashing tape with a butyl adhesive backing will help.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Beyond the dormer and cut the top section along the dormer edge.
Must be kept up off the surface of the roof a minimum 1 some manufacturers of exterior wall coverings require.
Click to enlarge make sure the sheathing wrap overlaps all step flashings.
Roof shingle over step flashing.
Two ways to flash roof edges.
Bend the corner flashing tightly around the corner.
At roof to wall intersections see figure 1.
One common method is to lay the edge metal under the eaves membrane and over the rake.
Bend the flap down and nail along the top edge.
