Michael and Brian,
Yes, this was a part of the whole problem. Its a good case study of how one problem can affect the whole structure and sometimes a deficiency is not a problem until there is a change in conditions. It’s also a story of fraud. I’ll get to that.
The low slope roof was leaking and the water was dripping onto insulation and drywall ceilings below. Because of the moisture intrusion the entire attic got very humid and the entire attic is now covered in mold. This perhaps would not have happened if ventilation was correct.
Look at the outside roof picture. A ridge vent is installed along the entire ridge from left to right. Now look at the inside picture. There is no gap. The roofer installed a fake ridge vent (put the GAF cobra vent over solid sheathing so from the outside it looks well ventilated). I told the homeowner that this is fraud.
It gets better.
The roofer offered to do some “extra” work to improve ventilation. $1800 to enlarge the soffit and gable vents and $1200 to install a ridge vent.
The buyer got the original invoice from the seller and installing a ridge vent was already included in the roofing quote when they installed the new roof. It appears to me that the roofer is trying to recoup some of the money he is having to spend to fix these issues by charging for “optional upgrades”.
I have a feeling that this is going to court.
the first screen shot - customer “Curtis” sent me a screen shot from his text from the roofer offering upgrades and Curtis asked me for advice.
the second screen shot Curtis got the original invoice that shows that installing a ridge vent was included in the roof they did last year.