Open valleys have metal flashing to protect this critical area of the roof.
Installing flashing for the roof.
The edge of the roof has thin metal flashing that helps water drip off.
As you roof along a chimney alternate shingles and l shaped pieces of step flashing.
Especially if you live in an area that gets a lot of snow and ice.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
How to install roof flashing against a wall.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Hammer 2 roofing nails into the flashing and roof.
Install the underlayment as directed by the manufacturer then set the valley flashing on top of it.
Place a second piece of 8 inch 20 3 cm flashing against the chimney.
The flashing should partially overlap the shingle that covers the first piece of flashing.
For the valley areas of the roof you will be using valley flashing.
Before you apply the flashing you ll need to lay down a waterproof membrane.
Prepare the area where you will install the roof flashing.
How to install porch roof flashing step 1.
Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of.
Installation of a continuous sheet of metal flashing from the top of the roof to the bottom of the roof in lieu of step flashing is not a correct method of installation in many instances.
Measure the length of the porch roof joint to determine how much flashing you will need.
If you already have faulty flashing installed you.
However the principles are the s.
Install the step flashing when the siding is installed it should be tucked behind this piece and then consecutive courses lapped over it.
The remaining siding on the sidewall will overlap the step flashing and nail.
While some skylight manufacturers include flashing in their products sometimes roofing professionals.
Step flashing step flashing redirects the water back onto the shingle.
For extra protection run a bead of urethane between the step flashing and the chimney.
Counterflashing will cover the tops of the step flashing.
Press the flashing into the urethane to achieve a positive seal.
