Sam Seagate wrote:
I live in the Northeast and we've just had several days of almost
continuous rain. Unfortunately, when I went into the laundry room of
the house today, I happened to notice some water on top of the paper
towel package I keep there. It wasn't much considering all the rain
we've had, probably 1/10 of an ounce if I were to label it, but I do see
the area of the roof that was stained with water. There is no attic in
the laundry room, so I can look right up at the roofing rafters. The
area is quite small and already dry. I quick peak at the area on the
roof itself and I don't see anything suspect, no broken or damaged
shingles that I can see.

This roof is 10 years old and hasn't leaked so far, but I am a bit
concerned, especially since there doesn't appear to be anything obvious.
I'd appreciate any tips as to what I should check and look for. Once
the weather clears, I'll try and post a photo of the area but the
weather is still inclement at this time.

Thanks for any help,
Sam
In addition to the advice others have given, look at the boots around
stack vents. I had a leak that only showed up during excessive rain due
to the stack vent having dropped slightly in the attic. That caused a
dimple to form around the stack vent boot and it caused water to
accumulate in that dimple. It was easy to understand once it was found,
but not at all obvious while searching for it.