Keep the nails as close to the edges of the flashing as possible.
Roof shingles against wall.
Even though roof flashing is one of the most important elements of a roof not many people know how to install roof flashing against a wall properly.
Items that penetrate the roof are by far the most common source of leaks.
The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high.
If the roof runs flat up against the brick wall you must install the roof side of the flashing either under the last layer of shingles or over the roof material if it is metal.
Flat roof and flashing against brick wall install base flashing under shingles or over metal roofing material.
Nailing in the inside of the flashing will ruin its.
Step 8 nail the flashing into place using galvanized roofing nails.
For areas where the walls meet the roof you will need to use the step flashing technique.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
But it doesn t work that way.
Ideally i like to start by installing a 3 ft.
Housewrap creates the foundation.
Metal flashing also called roof flashing goes against a stucco wall to protect it from water damage.
Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right.
The sheet acts as a backup at a vulnerable junction.
Sheet of housewrap or even better a piece of self adhering roof underlayment to the wall before the first truss or roof rafter is placed against it.
A roof or wall that is not properly sealed off from water can be extremely costly to fix not to mention the hassles that accompany the unwanted water.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
The horizontal part of the flashing will vary depending on the type of roof covering material.
Proper roof wall abutment flashing examples.
Flashing is usually made of sheet metal and is used to seal and protect joints in a building like those where a roof meets the brick walls of a chimney from roof leaks by directing the flow of.
In fact it s rare for leaks to develop in open areas of uninterrupted shingles even on older roofs.
The wall portion of the flashing should be flush against the exterior wall and the shingle portion of the flashing should be on top of the porch roof shingles.
Follow the photo for illustrated instructions.
Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof.
The first thing to look for is any roof penetrations.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.
