Fascia drip edge roofing materials connection type size and pattern of bolts all factor in to roof leak issues.
Leak between the seem of the roof.
Start with one coat of roofing cement.
A plumbing vent pipe is a common culprit for leaks.
If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic.
Some roof leaks are tough to locate.
Sometimes the water shows up at a ceiling spot distant from the leak.
Often water runs to openings in the vapor barrier such as at ceiling light fixtures.
This is key to prevent future leakage.
Use the putty knife to spread the roofing cement out so that it covers the leak source at least 1 inch on all sides.
Let the cement dry before putting the second layer of roofing cement on the joint.
Leaks may occur at seams of roof panels or near the connection to the house.
If any of these issues are present water will be able to enter your roof along the pipe.
Often the rubber boot on the vent will be worn or torn the metal plastic base will have a crack or broken seam or a few nails will be loose or missing.
So let s look at the ten of the most common culprits in causing your roof to leak and what you can and should do about them other than recruiting a bucket brigade.
And in our experience when a single piece of flashing extends only a few inches under the shingles especially on a long roof slope and worse on a roof that happens to slope slightly towards rather than away from the abutting vertical building wall the accumulated roof drainage water near the bottom end of the roof wall intersection will overwhelm the width of the flashing and because it is not directed back out on top of successive shingle courses it leaks into the building or building.