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The Hole in the Garage's Roof
6/8/2008 7:30 PM

wet_rot_inside_4
Initial excavation of the rotten wood.
Some previous owner of my garage had what I think was a basketball hoop mounted to the roof. When I took possession of the property the only thing that remained was two 1/2" holes through the roof where I assume the mounting bolts held the hoop assembly in place. Naturally, when it rained, water would drop into the garage. This wouldn't do!

As a stop-gap measure I slapped a spare shingle on top of the holes to try to minimize the leakage, but I did it sloppily and it worked about as well. But it was enough to stop me thinking about fixing  it properly.

This spring, as the weather warmed up, I started to notice big ants crawling on the inside of the garage. At first I couldn't figure out where they were coming from (or going to). It wasn't until I started noticing little piles of rotten wood shavings under the holes in the roof that I figured out what was going on.

I climbed up a ladder and found a nest of Carpenter Ants in the eave of the garage near where the holes were. I manually inspected the wood around the holes and found it to be quite rotten. I then climbed onto the roof of the garage and started tearing away the shingles to get an idea of the extent of the damage. In the end I cut a square hole 43" x 26" to get rid of all the rot.

Check out the photo gallery for a play-by-play of the action.


Image Gallery: Reparations
The process of fixing the rotten wood in the roof.
To make the patch flush with the surrounding 3/4" planks I added a second layer of 1/4" OSB (and threw a loose shingle on it for artistic effect). I was able to rip out this rotten wood with my hands. This is going to make shingling so much easier! It might almost be pleasant. Unfortunately, it started raining at about this time so I had to stop working for a while. I hope it doesn't storm too much before I can get the shingles replaced.
See all 9 images.