When we had our inspection the inspector noted that there was some water damage in the roof over the garage. It looked like someone had tried to fix it with a can of Great Stuff foam. Clearly not the optimal fix. However, since it was over the garage, and didn’t ever leak really badly I had put off fixing it until now. This weekend I ripped off a bunch of shingles to see just how bad it was, and surprise surprise, it was pretty bad. The sheathing over the area was mostly rotted away, and most of the rest of the sheet was delaminated and in poor shape. So I ripped up the shingles in the area, and replaced the piece of sheathing. Unfortunately I’m not sure that this will really fix the leak. It appears that the leak was actually occurring somewhere farther up the roof, where water was getting under the shingles and running down the top of the sheathing, until it got to the edge where it would then go into the garage.
Unfortunately I can’t tell where the source of the leak was, but I’m hoping that it was from the piece of wooden trim on the corner of the house. This piece was entierly rotted away. Where the base meets the roof (which you can just barely see in the top of the picture) there was nothing to prevent water from getting under the shingles. I’ve since replaced that with a nice new piece of pressure treated wood, and I’ve caulked it to the shingles to prevent any leaks underneath it. I’m hoping that between these two fixes it will stop the leak, at least until we get a new roof in another few years.
As always all of the in work pictures can be found in the gallery.