In this photo, you can see old architectural shingles and a guttering system that is non-functional. The vent stack flashing  is not installed correctly. Recommended to be repaired or replaced. 

Unfortunately, this back covered deck does not appear to be ready to install roofing material. The structure appears to need attention.  Repair or replacement

Here, you can see that several repairs have been made on this roof. You can also see another area where the gutter and facia are failing