Nicks Roof Rot

I was contacted by Nick reference some visible rot in the eaves of his home and a water stain that had occured in the cieling of a back bedroom near the exterior wall of the house.  I saw rot both in the facia and the soffit but upon further examination I noticed that the drip edge in that area was bent and damaged.  I realized that Nick had a lot of overhanging tree limbs and when I climbed up a ladder to get a better look....
 sure enough, there was a hole straight through his roof right behind the damaged drip edge.  I summized that at some point a tree limb had fallen onto the roof of Nick's house and damaged the roof by either puncturing just the shingles or even straight through the plywood sheeting under the shingles which allowed water to infiltrate.  I also observed a large pile of decaying leaf matter caught in the valley of the roof at this location.  I told Nick I would make the repair to the sheeting, shingles, soffit and facia but that I would further trim back all the limbs hanging over his roof that was causing the massive amounts of leaves to collect in his valleys.  It was this collecting leaf matter which was acting like a beaver dam on his roof and causing water to back up under his shingles causing the water mark in the bedroom cieling.  Nick wanted to do his own painting but so I left the repairs with only a solid coat of primer as a temporary protectant and to ensure the later painting would adhere.   

Regarding wood rot.... there is one thing I do that I consider to be above and beyond what others you might hire will do.  Most will simply replace the affected lumber and put a bead of caulk in the seams between two boards.  I go a step further and ensure that the boards that I am replacing are more weather resistant.  I do prime all surfaces to include the back side of plywood or other engineered wood surfaces.  I also smear caulk directly into the endgrains of all wood surfaces to help ensure that hanging water will not wick up the back of or end grain of the board.  9 times out of 10 wood rot begins in the exposed ends of boards once a standard bead of caulk has dried out and begun separating from between one or both of the surfaces it was meant to seal...

I started with trimming back the trees to ensure that lest there was any damage caused by a falling limb it would be on the front side of the repairs to be done.   Next I started the repair but in order to do this I had to remove 8-10 rows of shingles from both sides of the valley.  Next I had to remove all the facia, soffit and cut out the section of roof sheeting that was affected.  I replaced all rotted lumber with new pressure treated lumber that had been (as described above) treated with primer and caulk in such a way as to minimize any possibilities moisture related rot for many years to come.    Once all the lumber was replaced I had to re-roof that section of the house.  That is the short version of it but you get the idea.. see the below photos.