Welcome, my name is Rick and I will do my best to help you with your issue
Is the leak near the chimney?
is there an AC air handler in the attic?
there is no chimmey we just have a vent going our from the fireplace.
That's a type of chimney
yes there is an ac air handler in the attic and we have checked it.
is the leak near the air handler, the fireplace vent or any other roof penetrations?
does the leak only show when there is a heavy rain?
are you still with me?