I bought this new construction in 2007 at new york city and have been battling with lots of leaks since we moved in. Luckily most of the leaks are resolved by the builder who built it and those that can't be resolved are resolved with the awning solution (that solved my patio leak).
Just when I thought all the leaks have been resolved; my chimney started to leak around the flue pipe area in the basement. I have two water heaters and 1 furnace connected to the chimney. It is leaking around the where the flue pipe connects to the chimney. Pictures located at http://picasaweb.google.com/bchen321/Flue#5422907843776950978
It doesn't leak in the spring,summer,fall and would leak throughout the winter. It started leaking when there is no precipitation on the outside and as the temperature gets colder outdoors, the leak starts getting worse and will continue until the March time frame. Do you guys have any idea of what can be done to fix this?? The contractor caulked and check the flashing around the roof and added more weep holes in the chimney but that still did not resolve the problem and has been leaking for 3 winters. I am suspecting that newer efficient appliances makes it worse and I have a pretty tall chimney around 40 feet. Thanks for your help.