Installing Flashing For The Roof
If you already have faulty flashing installed you.
Installing flashing for the roof. Some types of roofing materials like concrete tile incorporate a continuous sheet of metal flashing at sidewalls. The remaining siding on the sidewall will overlap the step flashing and nail. Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of. Open valleys have metal flashing to protect this critical area of the roof.
Prepare the area where you will install the roof flashing. Press the flashing into the urethane to achieve a positive seal. The flashing should partially overlap the shingle that covers the first piece of flashing. Especially if you live in an area that gets a lot of snow and ice.
Hammer 2 roofing nails into the flashing and roof. As you roof along a chimney alternate shingles and l shaped pieces of step flashing. Before you apply the flashing you ll need to lay down a waterproof membrane. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. The edge of the roof has thin metal flashing that helps water drip off. However the principles are the s. 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. Measure the length of the porch roof joint to determine how much flashing you will need. Gaf mastering the roof chapter 13 flashing is used to seal and protects joints in a building from water penetration by direct the flow of water away from. 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.
For the valley areas of the roof you will be using valley flashing. While some skylight manufacturers include flashing in their products sometimes roofing professionals. How to install roof flashing against a wall. Place a second piece of 8 inch 20 3 cm flashing against the chimney.
Secure a shingle over the corner flashing using a hammer and roofing nail. Counterflashing will cover the tops of the step flashing.