If you can’t pinpoint the source of leaks in your building, hiring a forensic construction building envelope expert is essential.

The expert will begin by reviewing the as-built documents and assessing the on-site conditions to identify potential leak sources. Non-destructive and/or destructive testing may then be required to locate all contributing factors. Identifying both watertight and non-watertight areas is crucial to prevent new leaks from occurring due to unnecessary disturbances.

I see one leak on the interior of my building. Does that mean: (a) I only have one leak, and (b) the source is coming from directly above where I see the leak?

(A) It is a common misconception that seeing one leak indicates only one source of intrusion. The building envelope’s waterproofing layer is a delicate and often concealed part of the assembly. This layer can fail in multiple locations, allowing water to enter and travel through walls, floors, and ceilings, potentially exiting at one visible point. Forensic investigations often reveal multiple sources (e.g., 4-6 sources) contributing to a single leak, making it complex to resolve without a thorough investigation. It is just as critical to identify the functional components in the envelope as it is to identify the weak and dysfunctional aspects of the envelope.

(B) No. The leak can travel 100 feet or more before revealing itself within the building envelope. The interior beyond the waterproofing layers can absorb and transfer water over great distances. In conclusion, we see cases where the source is from 2-3 units down or a completey different elevation from the source of the leak and typically multiple sources are at play, especially in older buildings or in newly constructed buildings and remodels that have not experienced significant weather events.

California Consultants can assist in finding the exact source of leaks to ensure proper solutions.  We offer comprehensive testing and forensic leak investigation services.

Browse more frequently asked questions about our forensic leak detection services.