Finding LeaksFinding Leaks
There is a very simple rule to finding leaks: Water always moves downward, and sometimes wicks upward. One would thinks finding leaks is something anyone can do. The reality is that we will have people come to us and say "We've had several people come and do work on this leak and it still leaks. We are at our wit's end." Leaks often travel some distance between the point where they enter a roof and the point where they drip inside. The most extreme we have ever seen was a place in Magna that had a leak that dripped inside 174 feet from the hole in the roof. How does someone develop an instinct for sniffing out leaks? Frankly it takes years of scratching ones head looking at impossibly baffling situations and figuring them out that finally brings that sixth sense around.
Sometimes a roof looks like it could be leaking anywhere because it is old. The unsatisfactory solution is to start patching with a ten foot square section or so. If it doesn't work you patch some more. If you are lucky you hit it on the first try. If you are unlucky it gets to be pretty expensive before the leak is ever found. It is best not to get started blind patching. If a leak looks like it could be starting in any one of a dozen spots, but none are clearly the culprit, it might be time for a new roof.