By relying on long experience and employing high pressure washing, we can pinpoint exterior building leakage and find leaks.  If leaking persists, we have an array of tools and techniques -- including negative vacuum pressure, colored dyes, isolated area water testing and design analysis - that can be used to find the most difficult leaks. We provide detailed written reports with our findings, along with digital photos and product specifications, that will provide long term remedial relief. Serving San Francisco, Marin County and the greater Bay Area.