Suggested region and language based on your location

    Your current region and language

    BS EN 771-4

    Tarmac Building Products Limited
    Bluebell Close
    Clover Nook Industrial Estate
    Alfreton
    Somercotes
    DE55 4RA
    United Kingdom
    BSI logo

    Certificate Number: KM 10370
    Scope: Specification for masonry units - Autoclaved aerated concrete masonry units

    Original Registration Date Effective Date Last Revision Date Expiry Date
    1990-08-01 2024-03-14 2024-03-14 2026-12-01