My dryer pipe to the roof is causing damage to my ceiling due to condensation on the pipe. I have had four repair/roof specialist here, and none of them would concede that the problem was due to the dryer pipe. I was constantly told it was a leak in the roof. It has not rained for about 2 months, but I have done tons of laundry and tah dah, leaking ceiling! What can I do to fix this, especially since everyone I call will not fix it! Thank you for your time.