Exhibit 23.2
Consent of Independent Auditors
We consent to the reference to our firm under the caption “Experts” and to the use of our report dated May 29, 2015, with respect to the combined financial statements of Lafarge Target Business incorporated by reference in the Registration Statement (Form S-3) and related Prospectus of Summit Materials, Inc. for the registration of its common stock.
/s/ Ernst & Young LLP
McLean, Virginia
April 13, 2016
