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    US qualification standard

    ASTM D5385 - Standard test method for hydrostatic pressure resistance of waterproofing membranes

    Testing · NAC-037-TL
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    In short

    ASTM D5385 - Standard test method for hydrostatic pressure resistance of waterproofing membranes. Amstelfy's laboratory in Amstelveen performs this ASTM method for underground waterproofing membranes: hydrostatic pressure resistance. Testing is on the ISO/IEC 17025 accreditation scope NAC-037-TL, which lets European manufacturers prepare US evaluation-report programmes without shipping samples overseas.

    What we assess

    • hydrostatic pressure resistance

    Products covered

    • underground waterproofing membranes

    Accreditation status

    ActivityStandardAccreditationValidityOn scope
    TestingISO/IEC 17025:2017NAC-037-TLvalid until 2 December 2028Yes
    Product certificationISO/IEC 17065:2012NAC-026-PPSvalid until 31 January 2030No
    Validation & verificationISO/IEC 17029:2019NAC-006-VVvalid until 31 January 2030No
    NAC-037-TL — View certificate (PDF)NAC-026-PPS — View certificate (PDF)NAC-006-VV — View certificate (PDF)

    Route to market

    US and international evaluation-report programmes (ICC-ES, IAPMO UES, ACI 318 qualification) accept data from ISO/IEC 17025-accredited laboratories. Amstelfy runs these programmes in the Netherlands so European manufacturers avoid shipping samples overseas; the evaluation report itself is issued by the evaluation service.

    How it works

    1. 1

      Send the standard number, product description and intended use

    2. 2

      We confirm the applicable test series, sample quantities and timeline

    3. 3

      Samples are delivered to Veilmeesterweg 20, 1187 ZW Amstelveen (Mon-Fri 09:00-17:00)

    4. 4

      You receive the report in English, written for the TAB, Notified Body, evaluation service or programme operator.

    Frequently asked questions

    Yes - it is listed on the ISO/IEC 17025 testing scope NAC-037-TL.

    underground waterproofing membranes.

    Yes. Samples are shipped to the laboratory in Amstelveen, 10 minutes from Schiphol; quotations, test plans and reports are in English, and correspondence is also possible in Dutch and Turkish.

    Related standards

    All Waterproofing membranes, roof underlays & liquid-applied systems testing