Exhibit 99.1 James Hardie Industries plc Europa House 2nd Floor, Harcourt Centre Harcourt Street, Dublin 2, D02 WR20, Ireland T: +353 (0) 1 411 6924 F: +353 (0) 1 479 1128 James Hardie Industries plc is a limited liability company incorporated in Ireland with its registered office at Europa House 2nd Floor, Harcourt Centre, Harcourt Street, Dublin 2, D02 WR20, Ireland. Directors: Michael Hammes (Chairman, USA), Persio Lisboa (USA), Anne Lloyd (USA), Moe Nozari (USA), Rada Rodriguez (Sweden), Suzanne B. Rowland (USA), Dean Seavers (USA), Nigel Stein (UK), Harold Wiens (USA). Chief Executive Officer and Director: Jack Truong (USA) Company number: 485719 ARBN: 097 829 895 7 December 2021 The Manager Company Announcements Office Australian Securities Exchange Limited 20 Bridge Street SYDNEY NSW 2000 Dear Sir/Madam Substantial Holding Notice As required under ASX Listing Rule 3.17.3 please see attached a copy of the substantial holding notice received by James Hardie on 6 December 2021. Regards Joseph C. Blasko General Counsel & Company Secretary This announcement has been authorised for release by the General Counsel and Company Secretary, Mr Joseph C. Blasko.
