Roof Repair on a Steep 15 Year Old Dimensional Shingle Roof

These roof valleys have seen better days. The installers of this roof cut the shingles of the valley too deep. This causes cracking of valley shingles and the possibility of roof leaks.     

Huge crack and shingle Valley.  This single valley has huge cracks in it this is towards the front of the home and not near the leak this is among the worst cracks in the valley I’ve ever seen.