Install Flashing On Existing 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.

Install flashing on existing roof.

With without rain gutters. Install the kickout flashing underneath the first shingle photo 1. Flashing is installed to surround roof features such as vents chimneys and skylights. Most flashing is 8 inches wide.

How to install roof flashing against a wall. 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. Cut the flashing into 6 to 8 foot lengths to help prevent buckling after installation. 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. Typically flashing is installed using roofing nails and roofing cement. Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. Installing drip edge on your roof.

Some types of roofing materials like concrete tile incorporate a continuous sheet of metal flashing at sidewalls. 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. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. 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.

Step flashing step flashing redirects the water back onto the shingle. Apply roofing cement to the back of the flashing then nail it into place keeping all nails a minimum of 6. Tools supplies tin sn. 4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.