Hi I am wondering if anyone here might have some idea as to what a sound could be. We have one area in our house where our pipes run through the attic. Lately we have been hearing a dripping sound only after turning off water in the bathroom they run to. I know the obvious is a leak, but no water to be found. Still, each time we hear a dripping sound for about 10 seconds or so. So what else could make the sound. Thanks. Melissa Also wanted to ask if it were a leak wouldn't it make a dripping sound constantly?