Window Leak Testing Los Angeles

Windows fail. Windows Leak. It’s just a fact. Moreover, its an issues which many in Los Angeles have to deal with annually, during the rainy season. However long or short that may be even for Los Angeles.
Whats important to consider about window leaks is that most of the leaks are not even visible. Of course, these types of leaks are inside the walls. Usually the result in installation defects. Furthermore, these leaks can result in catastrophic damage to interior finishes not including the chance of mold. Window Leak Testing Los Angeles is in many cases, necessary when water intrusion is suspected.
Mazza Testing is a Rain Leak Specialist and performs Fenestration testing throughout Los Angeles. Not only do we test windows for leaks, but a whole host of other water intrusion related issues.
- Roofs
- Decks
- Shower pans
- Walls
- Sub-Grade
- Concrete
- Thermography
Many of these tests are conducted under the guides of the AAMA or ASTM standards. Reason being… is that these tests can be re produced by anyone at any time with identical results.
Rain Leak Specialist

For this particular project, the client, a contractor was in need of a window water test. Actually, the contractor was mandated to have a water test performed on these windows by a city official. You see, this contractor was performing a mold remediation clean up, when the inspector for the city handed down this requirement. The inspectors reasons for this was that he felt the windows may be a contributing factor during rain. Rightly so.
Our issue with this test was that; although we could perform a standardized test on these windows, they’d fail miserably. As a matter of fact, the windows would leak so badly that the test wouldn’t last more than 60 seconds. Reason being… the windows we extremely old and leaky.
Fenestration testing ASTM E1105

That said, however, the contractor still insisted the test be performed in accordance with ASTM E 1105 including an interior negative air chamber. Nevertheless, we proceeded with this test. First off, we taped the outer window to test the installation. Granted, the building owner painted the walls with an elastomeric sealant / paint days before the test. So this test was, for the most part skewed at best.
Even at the bare minimums for this ASTM test, we were not able to achieve a respectable interior pressure because the windows were so loose. Furthermore, the windows leaked as predicted. Even with al of this going on, believe it or not, we were still able to make the frame installation leak, where attached to the wall. Indeed I was surprised.
All things considered, it was a good call by the inspector and contractor, with respectable results.
Contact us for Water Intrusion Testing
Fenestration | Decks | Roof | Windows | Grade | Walls | More...
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