Any pictures by chance? http://www.badstucco.com
What kind? Is it over the nail fin of the windows at the top? And under the nail fin on the bottoms? http://www.badstucco.com
Do you have a humidifier? If you do what is the humidity level in the house? http://www.badstucco.com
Why would anyone want to stucco over OSB and not use a moisture barrier? http://www.badstucco.com
You allready did the water test with the hose. It must be the tarpaper or flashing. http://www.badstucco.com
You have a number of things wrong! To see more info about badstucco go to http://www.badstucco.com Bill H. Is right you are going to need legal h...
they make metal hoods that will cover the top of the fireplace! I am not sure about the ridge vent application you are talking about.
Can you take and post a couple of pictures! Even of the cap where it sounds like you need a metal hood to eliminate that leak. Fabricated and seale...
If it is a real tight round corner they just do it by standing the studs close and making the radius.
What kind of test? In the boat test 15 # felt wins hands down. I have a web site called www.badstucco.com I can be reached at the # on there toll ...