Hi, this is Steve from Roofer 911.
I'm on a roof in McLean, Virginia and the homeowner has a leak right next to the vent pipe. When I looked at the roofing material, I can see that the installation was done incorrectly. They put nails into the flashing and also this shingle here should be overlapping the flashing. Also there's nails exposed in the flashing here as well.
If there's a heavy downpour, the water can get underneath here, seep through the sides of the nails, and inside the house. Also, if there's a melting snow or a heavy downpour, the water can back up underneath the shingle here, find the nail and then the water will drop into the home right here as well.
Another thing, very important, is that even after I'm done repairing this vent, the roof will still leak and it will leak during a heavy melting snow or a heavy downpour.
Now these are architectural shingles and they're very good, but they're only as good as the contractor who installs it. What I mean by that is that when this roof was installed, the roofer used roofing nail guns. Now with a nail gun, the contractor can fasten five to eight nails a second. It's very quick.
Now if he doesn't pay attention to where he's placing each and every nail, there will be nails exposed at the joints here. This shingle here is good, but this one is not so the water can get in through the key, find an opening through the side of the nail. Now the water is travelling underneath the roof and wherever there's a pipe directly below, that's where it will settle.
We need to lift every shingle above this vent, all the way up to the ridge. Any shingles that have nails exposed, we're going to lift up the shingles, seal the nail with polyurethane and then we're going to slide a piece of aluminum step flashing underneath the key and then we'll reseal this shingle. With the step flashing underneath the shingle, it will not be visible when looking at the shingles even from the roof or from the ground.
My name is Steve from Roofer 911 and we specialize in roof repair in all areas of McLean, Mt. Vernon, and Northern Virginia and I can be reached at 703-475-2446. Thank you.
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