San Francisco Water Intrusion Specialist

San Francisco and Bay Area Water Intrusion Specialist.  We are the authority in rain leak detection.

The Bay Area’s Top Ranked Water Intrusion Testing Company

WIS is the #1 Rated Bay Area Water Intrusion Testing Company.  We are Rain Leak Detection Experts serving San Francisco and the surrounding Bay Area.

If you are located in the city of San Francisco, or any of the surrounding bay cities, and are suffering from rain related water intrusion leakage and/or  moisture leakage into your home or building, then you have come to the right place. We are Northern California’s top ranked water intrusion testing company with an expertise in Rain Leak Detection as it pertains to window leaks, door, leaks, wall and deck leaks and more. All of our test specialists and managers are experienced and trained in rain leak detection practices in how to find and source where water leaks are coming from. Chasing water leakage can be tricky, which is why you want a qualified company like Water Intrusion Specialist on your team to properly investigate and track down your water intrusion leak the first time.

Window water test ASTM E1105 San Francisco | Oakland

Window water intrusion and water leak testing in San Francisco | Oakland | San Jose | Bay Cities

Why Does Water Intrusion Occur In First Place?

That is never an easy answer but there are a number of different reasons that rain water leakage can occur ranging from lack of maintenance, expired life expectancy of the product or system, and even defective workmanship of the original construction. Some of the more common places we do find water intrusion are listed below.

  • Window and/or Door Product Itself
  • Window and/or Door Installation
  • Adjacent Wall System Construction
  • Architectural Transitions and Interfaces
  • Penetrations through the Exterior Cladding
  • Roof System
  • Decks and Balconies
  • HVAC and/or Exhaust Penetrations
  • Planters

Window and Wall Water Intrusion Leak Testing San Francisco | Oakland

Window and Wall Water Intrusion Leak Testing San Francisco | Oakland | San Jose


What Makes WIS the Water Intrusion Specialist and What Specific Areas of a Building do we Test for Water Leaks

As experts in the field of water intrusion testing we are trained and experienced in locating most types of water intrusion that finds an entry point through what the building industry calls the building envelope. Don’t be intimidated by that big word, all that really means is any product, component or system that is placed on the outside of your home or building which is designed to keep water out (just picture a protective shell for your structure that has the primary job of making sure rain does not leak to the inside).

We can test the entire building envelope that is made up of various products, components, and systems such as:

  • Fenestration products
    • Windows
    • Doors
    • Skylights
    • Commercial Glazing
      • storefronts, window walls, and curtain walls, etc.
  • Wall systems
    • Block
    • Concrete
    • Stucco
    • Metal Paneling
    • Siding
  • Roofing systems
    • Single ply, vinyl, shingles, etc.

How Do We Find Water Intrusion Leaks

Once you have contracted WIS to help you on a project we begin the forensic water leak detection and testing process by assigning one of our water intrusion specialists to your job.  Our expert technicians and project managers can then work with you to develop a test plan and protocol that is unique for your specific needs in locating the source(s) of the water leakage.

Test planning may also include determining if isolation testing shall be required to differentiate water leaks from various product-to-system transitions as previously mentioned (i.e.-window leaks vs. wall leaks or a sliding glass door water leak vs. a decking system leak).  The testing process if scientific in nature, extremely tedious, and utilizes industry-recognized test methods, specifically ASTM E2128, as well as specialized test equipment to simulate a rain event.

Water intrusion Specialists in San Francisco | Oakland

Water intrusion Specialists in San Francisco | Oakland

How do I get started in hiring WIS to help me?

That is the million-dollar question we always get, and it’s a good one. We start by kindly asking that you take the time to complete our “Request a Quote” form so we can learn a little more about you and your project.  Once we have reviewed your request one of our specialists will call you back and discuss your project more in depth.

Call Now: 888-381-7377