Install Flashing On Existing Roof

Step flashing step flashing redirects the water back onto the shingle.

Install flashing on existing roof.

Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. Tools supplies tin sn. How to install roof flashing against a wall. Some types of roofing materials like concrete tile incorporate a continuous sheet of metal flashing at sidewalls.

Flashing is installed to surround roof features such as vents chimneys and skylights. Install the kickout flashing underneath the first shingle photo 1. Apply roofing cement to the back of the flashing then nail it into place keeping all nails a minimum of 6. Most flashing is 8 inches wide.

Cut the flashing into 6 to 8 foot lengths to help prevent buckling after installation. Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. 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.

Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Installing drip edge on your roof. In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation. To install vent pipe flashing you will be placing the upper portion below the shingles while allowing the bottom portion that extends below the pipe to lay exposed on top of the shingles.

4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles. Water should run down the side of the flashing and be directed to the shingles instead of finding its way into the roof deck. If the shingle already has flashing on it the kickout flashing has to slip beneath it and you ll have to loosen or remove siding to do this. This is important to protect damage to your fascia soffits rafters.