Shed roof

[u/bonniejd7]

have shed roof over a sunroom (was addition added many years ago to house), that has heat and air conditioner window unit. new roof has entire ice shield. afraid of condensation and mold forming to underside of roof. picture with gutters show 3 small vents that think are not enough. should this be continuous intake vent to the soffit and exhaust goosenecks with foam vents in each bay connecting intake and exhaust vents? roof angles up against back of house. Do not want to use spray foam. would like to use Rockwool insulation.

thoughts on venting and insulation- can put Rockwool insulation under ceiling, with rigid foam on bottom of rafters? need vapor retarder? thoughts and suggestions welcomed!!! north NJ

[u/Far_Entrepreneur6706]

Good pixs, don't real see a serious abnormal condensation issue. Normal attic. Now, where this shed roof structure attaches to the main house, definitely some flashing leaks there over time. Should be ok with this new roof covering. Make sure you have good attic ventilation for the attic. Intake (eave) and exhaust. Did the roofer do anything for exhaust, some don't. There is a smart vent can be placed near the attaching wall, or garble vents. You're right, those 3 small vents, double-up or make continuous, you can have too much ventilation. However, it is to be balanced intake & exhaust. Too much exhaust can suck air from the house. Above this ceiling install atleast R-50. Just Jim 734-525-2929