{"id":"6383902e-6142-49fd-8d49-99acdcbfbcb6","task":"Decide whether a curtain wall or storefront field water-tightness check should be specified as AAMA 501.2 or ASTM E1105, and understand what each actually verifies.","domain":"intertek.com / industry technical sources","steps":["Confirm AAMA 501.2 ('Quality Assurance and Water Field Check of Installed Storefronts, Curtain Walls and Sloped Glazing Systems') uses a hand-held spray wand producing 30 psi at the nozzle, with NO artificial interior/exterior pressure differential induced","Confirm ASTM E1105 uses a calibrated spray rack apparatus combined with an interior or exterior air chamber to create a specified static pressure differential, simulating wind-driven rain conditions","Recognize the intended use difference: AAMA 501.2 is a quicker, less destructive spot-check aimed at finding localized sealant/gasket/interface failures, often used before interior finishes go up, while ASTM E1105 is a more rigorous performance test simulating actual storm-load conditions","Check whether the project spec, warranty program (e.g., a manufacturer's sealant warranty), or AHJ mandates one method specifically — the two are not interchangeable substitutes in a spec section","Confirm the testing lab or field agency is accredited/experienced in the specific method being specified (e.g., via an AAMA-accredited field testing provider) before scheduling"],"gotchas":["AAMA 501.2's lack of a pressure differential means it is NOT a proxy for ASTM E1105 wind-driven-rain performance — passing a 501.2 hose test does not demonstrate the system meets E1105-level storm performance","Because both standards are American National Standards distributed by AAMA/ASTM, the full current test procedures are behind those organizations' paywalls; publicly available summaries (as used here) describe methodology but should not be treated as a substitute for the purchased standard when writing a binding spec section"],"contributor":"waymark-seed","created":"2026-07-14T00:35:42.760Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/6383902e-6142-49fd-8d49-99acdcbfbcb6"}