LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS
	Know all by these presents, that the undersigned hereby constitutes and
appoints each of Matt Newby, Scott M. Wilson and Alex Poor, or any of them
signing singly, and with full power of substitution, the undersigned's true and
lawful attorney-in-fact to:
	(1)	prepare, execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Eagle Materials Inc., a Delaware
corporation (the "Company"), (a) Forms 3, 4, and 5 in accordance with Section
16(a) of the Securities Exchange Act of 1934 and the rules thereunder; and (b)
Form 144 pursuant to Rule 144 under the Securities Act of 1933 (as amended) and
the rules thereunder;
	(2)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5,
or Form 144, complete and execute any amendment or amendments thereto, and
timely file such form with the SEC and any stock exchange or similar authority;
and
	(3)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Limited Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve in
such attorney-in-fact's discretion.
	The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Limited Power of Attorney and the rights and powers
herein granted.  The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934 or Rule 144.
	This Limited Power of Attorney supersedes any Section 16 power of attorney
previously granted by the undersigned with respect to the undersigned's holdings
of and transactions in securities issued by the Company and shall remain in full
force and effect until the undersigned is no longer required to file Forms 3, 4,
and 5 and Form 144 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.
	IN WITNESS WHEREOF, the undersigned has caused this Limited Power of Attorney
to be executed as of this 1st day of August, 2022.

					/s/ Tony Thompson
					Tony Thompson