Roofing cement can be useful for certain temporary repairs, but repeated tar applications across multiple valleys and penetrations can indicate a roof that has accumulated several problem areas. In this Medford inspection, the extent of patching supported a replacement recommendation rather than another isolated repair.
What we documented on this roof.
Multiple roof valleys heavily coated with roofing tar / mastic
Several roof penetrations surrounded by tarred repair areas
Widespread patch-style repairs across critical water-shedding details
Overall repair history supported replacement rather than continued temporary patching
Based on the number and distribution of tarred valleys and penetrations observed, full roof replacement was recommended rather than continuing with repeated temporary repairs. Final replacement scope should include evaluation of the roof deck, flashing, penetrations and ventilation after tear-off.


