Thanks again guys for the good discussion here. To old dogs point, I'm going to try to stick with correcting the ridge vent here. it makes sense not to mix venting systems as you suggest. As I mentioned in my last post the main roof above the original house is isolated from the roof on the addition(Where the problems are)The addition roof starts 90 degrees off of the old one (when I crawl up in this space you can still see the outside of the old roof inside this space it's behind me in the pics I took) reason I bring this up is the roofer installed a new fan in the old roof (the old one died in the spring) and he also put in a ridge vent. although I suspect it looks like the one in the addition( I will need to inspect this as well). So in this space I have a gable vent on one side dead fan on the other (aka another vent) and a fan in the roof and now a ridge vent. No soffit vents. I'll probably just keep a close eye on this one. Bud, I'll try to answer a few of your questions here. Old house is vinyl over wooden clapboard. addition side( Also 2 stories & approx. 45 years old) is an insulating board material resembling OSB or waferboard black in color only not nearly as strong. without siding on you can poke holes in it. Siding contractor did not install anything over this before vinyl. I had requested fanfold ins. in retrospect perhaps I should have had the house wrapped, but I returned home one day & his crew was hanging siding with no fanfold. crew foreman kept going on about house needing to breathe..so everywhere there ladders poke holes through exterior I now believe is causing stains on house (At attic level inside of house holes show back of vinyl, warm air inside/cold out causes sweat on back of vinyl runs down house....inside house actually had 3*5 sheets of sheetrock tore down Insulated re-drywalled. Old house is balloon framing, addition is not. Also you asked about roofer tinning over holes from old vent, unfortunately not what I saw looks like underlayment for shingles. He did not use felt it resembled more like a house wrap. as I mentioned above next step will be to contact roofer and try to get ridge corrected.