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I have been sticking with the conclusion reached in that other thread, Nealtw, of just leaving the window open 24/7. No heater as I'm in Southern California, so pretty fair weather, but installed the fan because it was getting stuffy. Yes, I have the fan running in exchange mode, one fan in...

I have only one window for a detached 120sq ft room in Southern California. I've installed a dual-window fan and keep the window open at all times to have as much ventilation as possible; however, I still would like privacy. The solution I think may work in attempting to keep ventilation and...

Yeah, you have a slighter bigger space, I'm not a big fan of ac/heater. Nealtw's words as well as this link were very helpful in understanding the problem, http://www.etccreations.com/home/cathedralceilings

I wanted to make the 120sq ft structure as much as a living space/den/office as a home would have so I thought insulation/drywall was the way to go. I guess the combo of the small space, cold weather, and closed window reeks havoc.

It will be used for a den/office space, but it hasn't been occupied much at all yet even though this issue has already arisen due to the issues nealtw addressed.

Small gap around both electric blue boxes. Also, hole for wires could be filled to make smaller. Good improvements?

Usually at most a couple weeks of rain a year but very good point, may add vent. For weather, usually at most a couple weeks to a month a year would be the danger zone where nights sometimes hit 40's and the days can get 70's. Would you recommend to try to seal/cover any holes of the 2 electric...

So the conclusion I've reached for now is to do nothing (which is better than $ wasted on contractor ideas that were not helpful) but keep the window open (17"x33" opening) as much as possible. Based on So Cal weather, hopefully won't have an issue 90% of the time, and during the other time I...

Thanks oldognewtrick, so would a ridge vent AND eave vents solve my issues. Pardon my inexperience, but sounds like nealtw is saying gable vents are the only thing I can do short of opening drywall and starting over.

Thanks for your reply. I apologize but honestly still a bit confused on why a ridge vent wouldn't help because you described one of the problems of the current closed system is warm air not finding it's way out of attic, wouldn't the ridge vent solve that? It doesn't snow where I live. I can...

Really? It was one of the only ways left he could think of to vent the roof.

Hi nealtw and others, solution from contractor was to take the ridge cap off, cut 1 1/2" off each side and cover with ridge vent and new ridge cap. Thoughts?

Okay, yeah I was doing some online research now and eave or soffit vent was recommended as well as air space baffles (don't know how'd that fit). I will update what is recommended and again, can't thank you enough for helping on this.

No snow where I am. Re air: A little amount of air does get through drywall/insulation by way of the hole for the 2 lights (shown in previous picture), it is very small when light is covering up hole. I do have a window that provides a 17" opening for shed and will keep it open as much as...

It's a bit different since it's insulated/drywalled and want interior like a house, but I get what you are saying about needing airflow. No snow, just think morning dew and no roof ventilation could cause issue even with gable vents. Again, not very knowledgeable in this though.

Thanks so much for going through it Nealtw, where I got confused is SlownSteady said the problem may be from the lack of airspace above the drywall ceiling (which is true) so I thought that was the area I needed to make an adjustment to.

Looks like I'm going to have to nix gable vent idea because it won't solve my issue based on discussion with contractor (he's going to ask around to figure out a solution). The reason gable vents won't work to solve the problem is because the drywall is flush with the joists, as I mentioned...

Actually they're different topics nealtw, got sick and haven't had the time to do the hot water and brush or chemical solution recommended in the link you posted in this thread but will update my results when I do it, hopefully this week. Thanks again for your help.

So now I've been recommended to add an turbine in addition to the gables? Think just the gables is okay being 120 sq ft, or I'll really get benefit by adding the turbine?

Sorry for my lack of knowledge, but one last concern nealtw...Is there a reason you said dryer vents in each gable? To protect from rain and since it's only a small space? Would two regular gable vents be fine?