I am in the process of buying a Cape and during the inspection I used the inspector's laser thermostat and noticed that there is a 10 degree difference in the first and second floor, in 60s weather. I did some research thinking to add a ridge vent to cool the second floor and found that Capes are famous for being hot on 2nd floor due to lack of inlet ventilation. The only 2 choices to resolve this that I found are cobra fascia inlet vents or smart vents on the 1st layer of shingles, since the Capes do not have eaves for venting. I am leaning on the fascia vents since I can just pull the gutters and 1x6 vs having to pull shingles off a roof that is only 2 years old. Is this a good choice or is there some other way to get inlet flow.
Also I was thinking to add foam ridge board on the underside of the rafters to allow for a good flow from the inlet to outlet and to insulate the 2nd floor, as from what I read the knee walls can make it hard to get the second floor "tight". Would this work?
thank you in advance for your thoughts and ideas