AAMA 501.2 Window Water Testing in Los Angeles | San Francisco | San Diego
The AAMA 501.2 Window Water Testing procedure, provides for quality assurance. We perform this field water penetration test on: Storefronts, Window Walls, Curtain Walls, and Sloped Glazing Systems.
Looking for window water leaks
The AAMA 501.2 test that we perform in Los Angeles (and also in San Francisco and San Diego) is not a test designed for newly installed fenestration products that are operable or residential type windows; AAMA has a specific test for those particular products and that test is the AAMA 502. Otherwise, for exceptional weather events or conditions, you may want to opt for the AAMA 502, AAMA 503 or the ASTM E1105 methods. Along the same lines, AAMA 511 is reserved for forensic testing of fenestration products.
What’s in the scope of the AAMA 501.2-15?
When testing to the 501.2 we are essentially evaluating joints, gaskets and sealant applications within the glazing system. Furthermore, this test on these components are to be used on fenestration product which are permanently closed, sealed and water tight. That is, as opposed to operable systems like doors and windows which open.Prior to Performing the AAMA Test
Here are a few things to consider prior to performing any AAMA 501.2-15 Los Angeles Window Water Testing. Make note that all of the fenestration products to be tested are to be completely installed. Also key and of the utmost importance, is that the systems are installed in accordance with approved drawings. Additionally, the window products to be tested cannot possess any defects nor shall there be any outstanding “punch-list” items to be corrected. All of those requirements have to be completed prior to us arriving to the site for testing.
When sampling area for testing, the areas should be no less than 100 ft2 (square feet) and include the entire frame testing. In laymen terms, we are testing the caulking, splices and intersections of the window product. Should there be any operable components within the specimen, those components have to be isolated from the test. We do this so that the part of the specimen that is not intended for this test “does not” receive water spray.
Equipment used to perform the AAMA 501.2 test
If you’re a seasoned contractor, you’re probably familiar with this test. If you’re new to this test, you might find it odd that there isn’t a calibrated spray rack. The Calibrated Spray Rack is widely used throughout other AAMA and ASTM water intrusion tests.
The AAMA 501.2-15 Window Water Testing is, however, very specific in the nozzle used and the method by which water is applied onto the specimen.
Take the Nozzle for example. The specific nozzle used is manufactured by one company in the US and is specific to this test. Water pressures for this test are to be valve adjusted to a pressure of 30-35 psi displayed by a “calibrated” gauge. Even the water hose diameter is suggested. In some cases water pressures have to dip below this standard number. There is an exception written into the 501.2 which allows a reduction to 25 lbs. as quoted here below:
Special Notes for the AAMA 501.2-15 Los Angeles Window Water Testing method
NOTE 3: This test method may be conducted at pressures lower than 205 kPa (30 psi) providing that the reason (i.e. not practical at a multistory building location) for not achieving this pressure is 1) acceptable to the specifier, 2) the pressure is not lower than 170 kPa (25 psi) and 3) the reason and the actual pressure are so noted in the test report as an exception to the method.
Application of the AAMA 501.2-15 Los Angeles Window Water Testing
Once the testing starts, the operator will divide the tested areas into five-foot sections. When applying water onto the specimen the wand is held no less than one foot away from the tested surface. The wand is then moved in a back and forth motion, slowly across the specimen.
Moreover, the water applied is at a rate of one foot per minute. So there is no guess-work involved on the operator’s part. The Spray Wand must be setback by one foot (1-foot) per the standard.
During this test, a test technician is located inside the building armed with a flashlight and water indicating paper. Their primary job is to identify any water intrusion into the building as a result of the testing performed.
Reporting
After all, testing is completed a report is generated and issued. Our test reports will include the date and time of the test and the manufacturer’s fenestration model, material and dimensions.
We’re sure you’ll find our reports extremely clear and easy to understand. We document the condition of any specimen tested. This also includes their placement within the building.
Results from the tests show any water intrusion from primary or secondary testing if secondary testing was provided. The proximity of any leaks within the specimen or area is documented as well.
Our testing methods and procedures follow the AAMA 501.2-15 Window Water Testing procedure to the letter. Which is to say, as a third-party testing agency, our only job is to ensure the tests performed are administered exactly as specified in the AAMA document without deviation or opinion.
Frequently Asked Questions About AAMA 501.2 Rain Leak Testing in Los Angeles
Q: What is AAMA 501.2 rain leak testing in Los Angeles?
AAMA 501.2 is a field-applied water intrusion test used to investigate leaks in storefronts, curtain walls, sloped glazing, and other fenestration systems. Unlike pass/fail certification tests, it is a diagnostic method that identifies water entry points under controlled conditions. Water Intrusion Specialist (WIS) provides expert AAMA 501.2 Rain Leak Testing and Window Testing in Los Angeles to ensure building envelopes are fully watertight and compliant with industry standards.
Q: Why is AAMA 501.2 testing critical for Los Angeles buildings?
Los Angeles buildings face wind-driven rain, coastal humidity, and seasonal storms, which can compromise façade integrity. Proper AAMA 501.2 testing helps prevent water intrusion, mold growth, structural damage, and energy inefficiency. WIS delivers accurate, reliable results using industry-leading expertise and Los Angeles-specific knowledge.
Q: How does Water Intrusion Specialist (WIS) conduct AAMA 501.2 testing?
WIS performs a thorough, step-by-step diagnostic evaluation: inspecting installation, applying water using a calibrated AAMA 501.2 Spray Wand, monitoring interiors for leaks, documenting all findings, and providing certified, litigation-ready reports in partnership with Fenestration Testing Lab (FTL).
Q: What parts of a window or façade are tested?
All areas susceptible to water intrusion are inspected, including glass edges, frames, sealants, gaskets, splices, perimeter caulking, flashing, and transition points, ensuring comprehensive coverage per AAMA 501.2 standards.
Q: When is the best time to perform AAMA 501.2 testing?
Testing should be conducted after installation of the building envelope but before interior finishes. This allows any detected leaks to be corrected immediately, preventing costly remediation.
Q: How long does a typical test take?
Each 100 ft² section typically requires 30–60 minutes. WIS optimizes scheduling to maintain efficiency without compromising accuracy. Larger or more complex façades may require additional time.
Q: Who is qualified to perform AAMA 501.2 testing?
Testing should be performed by certified professionals with specialized experience. WIS, in partnership with Fenestration Testing Lab, provides objective, accredited testing and reporting suitable for warranty verification, legal documentation, or compliance purposes.
Q: What equipment is used during AAMA 501.2 testing?
WIS uses Lab Calibrated AAMA 501.2 Spray Wands, hoses, and pressure monitoring tools to ensure uniform water application. Documentation tools such as moisture meters, cameras, and absorbent indicators help record water intrusion accurately for diagnostic and reporting purposes.
Q: Can AAMA 501.2 testing detect intermittent or “hard to find” leaks?
Yes. AAMA 501.2 is specifically designed as a diagnostic field water leakage check that can reproduce leak conditions on demand using controlled water spray. By incrementally applying water and observing from the interior, WIS can locate leaks that occur only under certain conditions, including wind-driven rain and fluctuating weather patterns in Los Angeles.
Q: Is AAMA 501.2 testing destructive or damaging to building materials?
No. When performed correctly, AAMA 501.2 is a non-destructive field check. The process uses a calibrated spray wand and controlled application of water — not excessive pressure or invasive tools — to test joints, sealants, gaskets, and frames without harming the building envelope.
Q: What constitutes a leak during an AAMA 501.2 test?
Under the standard:
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“Water leakage” is any uncontrolled water that appears on normally exposed interior surfaces and can cause damage to adjacent materials.
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Small amounts that drain harmlessly or are retained in sill pans may not be considered failure, depending on context.
Q: Is AAMA 501.2 the same as ASTM E1105 or AAMA 502 testing?
No. These are distinct standards:
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AAMA 501.2 – Diagnostic water leakage field check for installed systems; qualitative.
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ASTM E1105 – Quantitative field water penetration test with defined pass/fail criteria.
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AAMA 502 – Field QA/QC test that may include air and water performance checks during construction.
Q: Why is selecting a representative test area important?
The test area must reflect typical conditions of the installed system — usually a minimum of 100 ft² and including perimeter seals, splices, and intersections — to produce accurate and meaningful results.
Q: Can AAMA 501.2 testing be used for litigation and warranty claims?
Yes. When performed by AAMA-accredited, independent professionals using calibrated equipment and documented procedures, AAMA 501.2 results can support warranty claims, construction disputes, insurance investigations, and expert reports. WIS coordinates with Fenestration Testing Lab to ensure reports meet litigation-ready standards.
Q: Does passing AAMA 501.2 mean a building will never leak?
No. AAMA 501.2 verifies that no uncontrolled water was observed under the specific test conditions. Ongoing maintenance, proper flashing, and regular inspections are necessary to ensure long-term resistance to water intrusion, especially in coastal and storm-exposed areas like Los Angeles.
Q: Can leaks found during testing be re-checked or retested?
Yes. Detected leaks can be repaired or sealed and retested to confirm corrective action, validating that the water intrusion issue has been fully resolved before closing walls and finishes.
Q: Is AAMA 501.2 testing suitable for existing buildings or only new construction?
AAMA 501.2 can be used on both new construction and existing buildings where leaks are present or suspected. It is widely used for forensic investigations as well as quality assurance checks during construction.
Schedule Your AAMA 501.2 Testing Today
Ensure your Los Angeles building is fully watertight and compliant with industry standards. Contact Water Intrusion Specialist (WIS) to schedule expert AAMA 501.2 Rain Leak Testing for storefronts, curtain walls, window walls, and sloped glazing systems.
Related Services
ASTM E1105 Field Water Penetration Testing
Forensic Window Leak Detection
Rain Leak Testing
Curtain Wall & Storefront Testing
Thermography and Infrared Imaging Analysis
Why Choose WIS in Los Angeles
With years of experience performing AAMA 501.2 testing in Los Angeles, WIS is the trusted authority for commercial buildings, high-rises, and coastal properties. Our certified testing, documentation, and detailed reports set the gold standard for reliability and accuracy.
