Housewrap creates the foundation.
Roof shingles against wall.
A sidewall is a junction between a wall and a sloped portion of a roof.
Proper roof wall abutment flashing examples.
In fact it s rare for leaks to develop in open areas of uninterrupted shingles even on older roofs.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
Nailing in the inside of the flashing will ruin its.
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.
Ideally i like to start by installing a 3 ft.
The sheet acts as a backup at a vulnerable junction.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Flat roof and flashing against brick wall install base flashing under shingles or over metal roofing material.
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.
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.
The first thing to look for is any roof penetrations.
Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof.
Once even a small section of roofing cement fails you ll have a leak.
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.
For areas where the walls meet the roof you will need to use the step flashing technique.
Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof.
But it doesn t work that way.
Keep the nails as close to the edges of the flashing as possible.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.
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.
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.
Step 8 nail the flashing into place using galvanized roofing nails.
Follow the photo for illustrated instructions.
The horizontal part of the flashing will vary depending on the type of roof covering material.
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.
