I am having a problem with water dripping on the inside of my roof. It is not severe and only in one spot. I recently had my roof done. My home is a chalet style with cathedral ceilings and exposed roof rafters. There is t&g cedar on top on the roof rafters, 2" foam insulation on top of that, then 3/4 ferring strip, 1/2 inch plywood, tar paper then the shingles. I have a feeling it is condensating in the 3/4 air gap and running down the insulation. I have a ridge vent on the house but no sofit vents. I don't have anywhere to put those due to adjoining roofs at each end. I have one spot in my ceiling where a pipe runs through for my stove. It is on the other side of the peak though. Is it possible that the hot air is escaping out around the pipe, into the 3/4 air gap then rising to the peak and mixing with the cold air to form moisture then running down the other side of my roof? I originally didn't want to piut the air gap there but someone told me I needed it. I am also debating about putting T&G over the roof rafters on the inside of the house and blowing celluose in to them for an air tight seal. I lose the look of the exposed beams but at least I think my roof would be a bit more air tight. What is your opinion? Any info on the matter would be extremely appreciated.

Thank Denn

I don't understand the need for an air gap at all, but it's too late now, it's there. Is the leak exactly opposite the stove pipe? When does it leak? During rain? All the time? How much water are you getting? Does it leak when the stove isn't in use?