It is best to take the time to remove the old application so that you can ensure a tight seal.
How to repair roof wall flashing.
If you find damage then you will have to get it.
It is easier to apply the roof cement from a caulk gun than any other method.
That way any water that seeps through will be diverted.
Be sure to follow the.
How to repair roof flashing small holes or corroded spots in flashing can be easily repaired.
Purchase the cement in a tube that will fit your caulk gun.
Check out our recommended tools right here.
However it s important to check for damage anyway.
Proper roof wall flashing example to install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width.
Flashing around chimneys can rust through if it s galvanized steel especially at the 90 degree bend at the bottom.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
When working with step flashing this may involve removing undamaged pieces of flashing as well.
The best fix though is to cut a saw kerf into the mortar and install new flashing.
First roughen the area around the hole with a wire brush or sandpaper and then clean it.
A quick but fairly long term fix is to simply slip new flashing under the old rusted stuff.
How to repair roof flashing step one.