EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of CRH public limited company (the “Company”) on Form 10-Q for

the quarter ended June 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the

“Report”), I, Albert Manifold, Chief Executive of the Company, certify, pursuant to Section 906 of the

Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Signature:	/s/ Albert Manifold
	Albert Manifold
	Chief Executive August 8, 2024