water dripping

My mother lives in Pennsylvania. She has consistently had water running down the outside of the exhaust pipe from her ~7 yr old Goodman High Efficiency gas furnace for the past 3-4 weeks. It is located in a 2nd floor utility room. It seems to happen regardless of precipitation. It has been...

I need to stop the dripping from a flat roof over my entryway. I am considering fabricating an L-shaped thin aluminum flashing (from the roll material used for making gutters) , 4' long, 1"high. There is an adjacent gutter where excess water would flow into. I could cement this new flashing...