If you are experiencing water intrusion, then water is coming in through your roof or walls. A leaky roof is fairly simple to pinpoint. Leaky walls can be trickier. For example, brick buildings often have wall leaks that are hard to identify. Look at transitions between brick courses, at corners, and where brick meets other materials. If your “caulk” looks to be cracked, it could be a water entry point. In this case, a clear, penetrating sealer is a good solution.